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            "system": "http://hl7.org/fhir/fhir-types",
            "code": "time",
            "display": "time"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "unsignedInt",
            "display": "unsignedInt"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "uri",
            "display": "uri"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "url",
            "display": "url"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "uuid",
            "display": "uuid"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Address",
            "display": "Address"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Age",
            "display": "Age"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Annotation",
            "display": "Annotation"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Attachment",
            "display": "Attachment"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "CodeableConcept",
            "display": "CodeableConcept"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Coding",
            "display": "Coding"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "ContactPoint",
            "display": "ContactPoint"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Count",
            "display": "Count"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Distance",
            "display": "Distance"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Duration",
            "display": "Duration"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "HumanName",
            "display": "HumanName"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Identifier",
            "display": "Identifier"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Money",
            "display": "Money"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Period",
            "display": "Period"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Quantity",
            "display": "Quantity"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Range",
            "display": "Range"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Ratio",
            "display": "Ratio"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "RatioRange",
            "display": "RatioRange"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "SampledData",
            "display": "SampledData"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Signature",
            "display": "Signature"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Timing",
            "display": "Timing"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "ContactDetail",
            "display": "ContactDetail"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "DataRequirement",
            "display": "DataRequirement"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Expression",
            "display": "Expression"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "ParameterDefinition",
            "display": "ParameterDefinition"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "RelatedArtifact",
            "display": "RelatedArtifact"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "TriggerDefinition",
            "display": "TriggerDefinition"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "UsageContext",
            "display": "UsageContext"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Availability",
            "display": "Availability"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "ExtendedContactDetail",
            "display": "ExtendedContactDetail"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Dosage",
            "display": "Dosage"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Meta",
            "display": "Meta"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs27",
      "name": "Type options for DataRequirement.subject[x]",
      "status": "active",
      "description": "Type options for DataRequirement.subject[x]",
      "expansion": {
        "identifier": "urn:uuid:3b285fc5-3e6e-471a-aaf9-99c7dff03068",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "CodeableConcept",
            "display": "CodeableConcept"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Group",
            "display": "Group"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs28",
      "name": "Type options for DataRequirement.dateFilter.value[x]",
      "status": "active",
      "description": "Type options for DataRequirement.dateFilter.value[x]",
      "expansion": {
        "identifier": "urn:uuid:3fac3c89-ef51-4e02-9388-a8f482dfe74a",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "dateTime",
            "display": "dateTime"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Period",
            "display": "Period"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Duration",
            "display": "Duration"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs29",
      "name": "Type options for DataRequirement.valueFilter.value[x]",
      "status": "active",
      "description": "Type options for DataRequirement.valueFilter.value[x]",
      "expansion": {
        "identifier": "urn:uuid:a5329d5d-88ac-415f-8224-be7ff8360cdf",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "dateTime",
            "display": "dateTime"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Period",
            "display": "Period"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Duration",
            "display": "Duration"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs30",
      "name": "Type options for TriggerDefinition.timing[x]",
      "status": "active",
      "description": "Type options for TriggerDefinition.timing[x]",
      "expansion": {
        "identifier": "urn:uuid:3eb3f8b0-57bb-43c7-aca0-2173861a7c14",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Timing",
            "display": "Timing"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Schedule",
            "display": "Schedule"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "date",
            "display": "date"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "dateTime",
            "display": "dateTime"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs31",
      "name": "Type options for UsageContext.value[x]",
      "status": "active",
      "description": "Type options for UsageContext.value[x]",
      "expansion": {
        "identifier": "urn:uuid:e9948c59-fe2b-4057-b7b7-1faf0df2b8c4",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "CodeableConcept",
            "display": "CodeableConcept"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Quantity",
            "display": "Quantity"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Range",
            "display": "Range"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "PlanDefinition",
            "display": "PlanDefinition"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "ResearchStudy",
            "display": "ResearchStudy"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "InsurancePlan",
            "display": "InsurancePlan"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "HealthcareService",
            "display": "HealthcareService"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Group",
            "display": "Group"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Location",
            "display": "Location"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Organization",
            "display": "Organization"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs32",
      "name": "Type options for Dosage.doseAndRate.dose[x]",
      "status": "active",
      "description": "Type options for Dosage.doseAndRate.dose[x]",
      "expansion": {
        "identifier": "urn:uuid:e9bc7b66-3b4e-44ea-8c6c-96cbcc001fbc",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Range",
            "display": "Range"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "http://hl7.org/fhir/StructureDefinition/SimpleQuantity",
            "display": "Quantity"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs33",
      "name": "Type options for Dosage.doseAndRate.rate[x]",
      "status": "active",
      "description": "Type options for Dosage.doseAndRate.rate[x]",
      "expansion": {
        "identifier": "urn:uuid:86baf62a-7391-4bb9-95ce-1bc7dada57d4",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Ratio",
            "display": "Ratio"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Range",
            "display": "Range"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "http://hl7.org/fhir/StructureDefinition/SimpleQuantity",
            "display": "Quantity"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs34",
      "name": "Type options for ElementDefinition.minValue[x]",
      "status": "active",
      "description": "Type options for ElementDefinition.minValue[x]",
      "expansion": {
        "identifier": "urn:uuid:a92df24e-9738-4df9-9919-32b95bc0af48",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "date",
            "display": "date"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "dateTime",
            "display": "dateTime"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "instant",
            "display": "instant"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "time",
            "display": "time"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "decimal",
            "display": "decimal"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "integer",
            "display": "integer"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "integer64",
            "display": "integer64"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "positiveInt",
            "display": "positiveInt"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "unsignedInt",
            "display": "unsignedInt"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Quantity",
            "display": "Quantity"
          }
        ]
      }
    },
    {
      "resourceType": "ValueSet",
      "id": "vs35",
      "name": "Type options for ElementDefinition.maxValue[x]",
      "status": "active",
      "description": "Type options for ElementDefinition.maxValue[x]",
      "expansion": {
        "identifier": "urn:uuid:414201ce-3158-44be-a214-149a070baa6a",
        "timestamp": "2023-03-26T15:26:42+11:00",
        "contains": [
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "date",
            "display": "date"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "dateTime",
            "display": "dateTime"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "instant",
            "display": "instant"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "time",
            "display": "time"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "decimal",
            "display": "decimal"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "integer",
            "display": "integer"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "integer64",
            "display": "integer64"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "positiveInt",
            "display": "positiveInt"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "unsignedInt",
            "display": "unsignedInt"
          },
          {
            "system": "http://hl7.org/fhir/fhir-types",
            "code": "Quantity",
            "display": "Quantity"
          }
        ]
      }
    }
  ],
  "url": "http://hl7.org/fhir/Questionnaire/qgen-elementdefinition-de1",
  "identifier": [
    {
      "system": "urn:ietf:rfc:3986"
    }
  ],
  "version": "5.0.0",
  "status": "draft",
  "experimental": false,
  "date": "2015-02-28T00:00:00+11:00",
  "publisher": "Health Level Seven International (Orders and Observations)",
  "item": [
    {
      "linkId": "ElementDefinition",
      "text": "Definition of an element in a resource or extension",
      "type": "group",
      "required": false,
      "repeats": true,
      "item": [
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
              "valueCodeableConcept": {
                "coding": [
                  {
                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                    "code": "flyover",
                    "display": "Fly-over"
                  }
                ]
              }
            }
          ],
          "linkId": "ElementDefinition-flyover",
          "text": "Captures constraints on each element within the resource, profile, or extension.",
          "type": "display"
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.id",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.id-flyover",
              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.id.value",
              "text": "Unique id for inter-element referencing",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "linkId": "ElementDefinition.extension",
          "text": "Additional content defined by implementations",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.extension-flyover",
              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
              "type": "display"
            }
          ]
        },
        {
          "linkId": "ElementDefinition.modifierExtension",
          "text": "Extensions that cannot be ignored even if unrecognized",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.modifierExtension-flyover",
              "text": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element\u0027s descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
              "type": "display"
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.path",
          "type": "group",
          "required": true,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.path-flyover",
              "text": "The path identifies the element and is expressed as a \".\"-separated list of ancestor elements, beginning with the name of the resource or extension.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.path.value",
              "text": "Path of the element in the hierarchy of elements",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "code"
            }
          ],
          "linkId": "ElementDefinition.representation",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.representation-flyover",
              "text": "Codes that define how this element is represented in instances, when the deviation varies from the normal case. No extensions are allowed on elements with a representation of \u0027xmlAttr\u0027, no matter what FHIR serialization format is used. In resources, this is rarely used except for special cases where the representation deviates from the normal, and can only be done in the base standard (and profiles must reproduce what the base standard does). This element is used quite commonly in Logical models when the logical models represent a specific serialization format (e.g. CDA, v2 etc.).",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.representation.value",
              "text": "representation",
              "type": "coding",
              "required": false,
              "repeats": false,
              "answerConstraint": "optionsOrType"
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.sliceName",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.sliceName-flyover",
              "text": "The name of this element definition slice, when slicing is working. The name must be a token with no dots or spaces. This is a unique name referring to a specific set of constraints applied to this element, used to provide a name to different slices of the same element. The name SHALL be unique within the structure within the context of the constrained resource element.  (Though to avoid confusion, uniqueness across all elements is recommended.).",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.sliceName.value",
              "text": "Name for this particular element (in a set of slices)",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "boolean"
            }
          ],
          "linkId": "ElementDefinition.sliceIsConstraining",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.sliceIsConstraining-flyover",
              "text": "If true, indicates that this slice definition is constraining a slice definition with the same name in an inherited profile. If false, the slice is not overriding any slice in an inherited profile. If missing, the slice might or might not be overriding a slice in an inherited profile, depending on the sliceName. If set to true, an ancestor profile SHALL have a slicing definition with this name.  If set to false, no ancestor profile is permitted to have a slicing definition with this name.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.sliceIsConstraining.value",
              "text": "If this slice definition constrains an inherited slice definition (or not)",
              "type": "boolean",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.label",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.label-flyover",
              "text": "A single preferred label which is the text to display beside the element indicating its meaning or to use to prompt for the element in a user display or form. See also the extension [http://hl7.org/fhir/StructureDefinition/elementdefinition-question](http://hl7.org/fhir/extensions/StructureDefinition-elementdefinition-question.html).",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.label.value",
              "text": "Name for element to display with or prompt for element",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "Coding"
            }
          ],
          "linkId": "ElementDefinition.code",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.code-flyover",
              "text": "A code that has the same meaning as the element in a particular terminology. The concept SHALL be properly aligned with the data element definition and other constraints, as defined in the code system, including relationships, of any code listed here.  Where multiple codes exist in a terminology that could correspond to the data element, the most granular code(s) should be selected, so long as they are not more restrictive than the data element itself. The mappings may be used to provide more or less granular or structured equivalences in the code system.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.code.value",
              "text": "Corresponding codes in terminologies",
              "type": "coding",
              "required": false,
              "repeats": false,
              "answerConstraint": "optionsOnly"
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            }
          ],
          "linkId": "ElementDefinition.slicing",
          "text": "This element is sliced - slices follow",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "linkId": "ElementDefinition.slicing-display",
              "text": "The first element in the sequence, the one that carries the slicing, is the definition that applies to all the slices. This is based on the unconstrained element, but can apply any constraints as appropriate. This may include the common constraints on the children of the element.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.slicing-flyover",
              "text": "Indicates that the element is sliced into a set of alternative definitions (i.e. in a structure definition, there are multiple different constraints on a single element in the base resource). Slicing can be used in any resource that has cardinality ..* on the base resource, or any resource with a choice of types. The set of slices is any elements that come after this in the element sequence that have the same path, until a shorter path occurs (the shorter path terminates the set).",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.slicing.id",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.id-flyover",
                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.slicing.id.value",
                  "text": "Unique id for inter-element referencing",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.slicing.extension",
              "text": "Additional content defined by implementations",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.extension-flyover",
                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                  "type": "display"
                }
              ]
            },
            {
              "linkId": "ElementDefinition.slicing.discriminator",
              "text": "Element values that are used to distinguish the slices",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "linkId": "ElementDefinition.slicing.discriminator-display",
                  "text": "If there is no discriminator, the content is hard to process, so this should be avoided.",
                  "type": "display"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.discriminator-flyover",
                  "text": "Designates which child elements are used to discriminate between the slices when processing an instance. If one or more discriminators are provided, the value of the child elements in the instance data SHALL completely distinguish which slice the element in the resource matches based on the allowed values for those elements in each of the slices.",
                  "type": "display"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.discriminator.id",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.slicing.discriminator.id-flyover",
                      "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.slicing.discriminator.id.value",
                      "text": "Unique id for inter-element referencing",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.slicing.discriminator.extension",
                  "text": "Additional content defined by implementations",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.slicing.discriminator.extension-flyover",
                      "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                      "type": "display"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "code"
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.discriminator.type",
                  "type": "group",
                  "required": true,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.slicing.discriminator.type-flyover",
                      "text": "How the element value is interpreted when discrimination is evaluated. \u0027pattern\u0027 is deprecated - it works exactly the same as \u0027value\u0027.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.slicing.discriminator.type.value",
                      "text": "type",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOrType"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.discriminator.path",
                  "type": "group",
                  "required": true,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.slicing.discriminator.path-flyover",
                      "text": "A FHIRPath expression, using [the simple subset of FHIRPath](fhirpath.html#simple), that is used to identify the element on which discrimination is based.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.slicing.discriminator.path.value",
                      "text": "Path to element value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.slicing.description",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.description-flyover",
                  "text": "A human-readable text description of how the slicing works. If there is no discriminator, this is required to be present to provide whatever information is possible about how the slices can be differentiated. If it\u0027s really not possible to differentiate them, the design should be re-evaluated to make the content usable.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.slicing.description.value",
                  "text": "Text description of how slicing works (or not)",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "boolean"
                }
              ],
              "linkId": "ElementDefinition.slicing.ordered",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.ordered-flyover",
                  "text": "If the matching elements have to occur in the same order as defined in the profile. Order should only be required when it is a pressing concern for presentation. Profile authors should consider making the order a feature of the rules about the narrative, not the rules about the data - requiring ordered data makes the profile much less re-usable.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.slicing.ordered.value",
                  "text": "If elements must be in same order as slices",
                  "type": "boolean",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "code"
                }
              ],
              "linkId": "ElementDefinition.slicing.rules",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.slicing.rules-flyover",
                  "text": "Whether additional slices are allowed or not. When the slices are ordered, profile authors can also say that additional slices are only allowed at the end. Allowing additional elements makes for a much for flexible template - it\u0027s open for use in wider contexts, but also means that the content of the resource is not closed, and applications have to decide how to handle content not described by the profile.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.slicing.rules.value",
                  "text": "rules",
                  "type": "coding",
                  "required": false,
                  "repeats": false,
                  "answerConstraint": "optionsOrType"
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.short",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.short-flyover",
              "text": "A concise description of what this element means (e.g. for use in autogenerated summaries). It is easy for a different short definition to change the meaning of an element and this can have nasty downstream consequences. Please be careful when providing short definitions in a profile.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.short.value",
              "text": "Concise definition for space-constrained presentation",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.definition",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.definition-flyover",
              "text": "Provides a complete explanation of the meaning of the data element for human readability.  For the case of elements derived from existing elements (e.g. constraints), the definition SHALL be consistent with the base definition, but convey the meaning of the element in the particular context of use of the resource. (Note: The text you are reading is specified in ElementDefinition.definition). It is easy for a different definition to change the meaning of an element and this can have nasty downstream consequences. Please be careful when providing definitions in a profile.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.definition.value",
              "text": "Full formal definition as narrative text",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.comment",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.comment-flyover",
              "text": "Explanatory notes and implementation guidance about the data element, including notes about how to use the data properly, exceptions to proper use, etc. (Note: The text you are reading is specified in ElementDefinition.comment). If it is possible to capture usage rules using constraints, that mechanism should be used in preference to this element.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.comment.value",
              "text": "Comments about the use of this element",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.requirements",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.requirements-flyover",
              "text": "This element is for traceability of why the element was created and why the constraints exist as they do. This may be used to point to source materials or specifications that drove the structure of this element. This element does not describe the usage of the element (that\u0027s done in comments), rather it\u0027s for traceability of *why* the element is either needed or why the constraints exist as they do.  This may be used to point to source materials or specifications that drove the structure of this data element.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.requirements.value",
              "text": "Why this resource has been created",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.alias",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.alias-flyover",
              "text": "Identifies additional names by which this element might also be known.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.alias.value",
              "text": "Other names",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "integer"
            }
          ],
          "linkId": "ElementDefinition.min",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.min-flyover",
              "text": "The minimum number of times this element SHALL appear in the instance.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.min.value",
              "text": "Minimum Cardinality",
              "type": "integer",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.max",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.max-flyover",
              "text": "The maximum number of times this element is permitted to appear in the instance.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.max.value",
              "text": "Maximum Cardinality (a number or *)",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            }
          ],
          "linkId": "ElementDefinition.base",
          "text": "Base definition information for tools",
          "type": "group",
          "required": false,
          "repeats": false,
          "item": [
            {
              "linkId": "ElementDefinition.base-display",
              "text": "The base information does not carry any information that could not be determined from the path and related profiles, but making this determination requires both that the related profiles are available, and that the algorithm to determine them be available. For tooling simplicity, the base information must always be populated in element definitions in snap shots, even if it is the same.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.base-flyover",
              "text": "Information about the base definition of the element, provided to make it unnecessary for tools to trace the deviation of the element through the derived and related profiles. When the element definition is not the original definition of an element - e.g. either in a constraint on another type, or for elements from a super type in a snap shot - then the information in provided in the element definition may be different to the base definition. On the original definition of the element, it will be same.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.base.id",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.base.id-flyover",
                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.base.id.value",
                  "text": "Unique id for inter-element referencing",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.base.extension",
              "text": "Additional content defined by implementations",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.base.extension-flyover",
                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                  "type": "display"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.base.path",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.base.path-flyover",
                  "text": "The Path that identifies the base element - this matches the ElementDefinition.path for that element. Across FHIR, there is only one base definition of any element - that is, an element definition on a [StructureDefinition](structuredefinition.html#) without a StructureDefinition.base.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.base.path.value",
                  "text": "Path that identifies the base element",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "integer"
                }
              ],
              "linkId": "ElementDefinition.base.min",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.base.min-flyover",
                  "text": "Minimum cardinality of the base element identified by the path. This is provided for consistency with max, and may affect code generation of mandatory elements of the base resource are generated differently (some reference implementations have done this).",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.base.min.value",
                  "text": "Min cardinality of the base element",
                  "type": "integer",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.base.max",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.base.max-flyover",
                  "text": "Maximum cardinality of the base element identified by the path. This is provided to code generation, since the serialization representation in JSON differs depending on whether the base element has max \u003e 1. Also, some forms of code generation may differ.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.base.max.value",
                  "text": "Max cardinality of the base element",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "uri"
            }
          ],
          "linkId": "ElementDefinition.contentReference",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.contentReference-flyover",
              "text": "Identifies an element defined elsewhere in the definition whose content rules should be applied to the current element. ContentReferences bring across all the rules that are in the ElementDefinition for the element, including definitions, cardinality constraints, bindings, invariants etc. ContentReferences can only be defined in specializations, not constrained types, and they cannot be changed and always reference the non-constrained definition.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.contentReference.value",
              "text": "Reference to definition of content for the element",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "linkId": "ElementDefinition.type",
          "text": "Data type and Profile for this element",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "linkId": "ElementDefinition.type-display",
              "text": "The Type of the element can be left blank in a differential constraint, in which case the type is inherited from the resource. Abstract types are not permitted to appear as a type when multiple types are listed.  (I.e. Abstract types cannot be part of a choice).",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.type-flyover",
              "text": "The data type or resource that the value of this element is permitted to be.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.type.id",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.type.id-flyover",
                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.type.id.value",
                  "text": "Unique id for inter-element referencing",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.type.extension",
              "text": "Additional content defined by implementations",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.type.extension-flyover",
                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                  "type": "display"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "uri"
                }
              ],
              "linkId": "ElementDefinition.type.code",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.type.code-flyover",
                  "text": "URL of Data type or Resource that is a(or the) type used for this element. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition e.g. \"string\" is a reference to http://hl7.org/fhir/StructureDefinition/string. Absolute URLs are only allowed in logical models. If the element is a reference to another resource, this element contains \"Reference\", and the targetProfile element defines what resources can be referenced. The targetProfile may be a reference to the general definition of a resource (e.g. http://hl7.org/fhir/StructureDefinition/Patient).",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.type.code.value",
                  "text": "Data type or Resource (reference to definition)",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 0
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "uri"
                }
              ],
              "linkId": "ElementDefinition.type.profile",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.type.profile-flyover",
                  "text": "Identifies a profile structure or implementation Guide that applies to the datatype this element refers to. If any profiles are specified, then the content must conform to at least one of them. The URL can be a local reference - to a contained StructureDefinition, or a reference to another StructureDefinition or Implementation Guide by a canonical URL. When an implementation guide is specified, the type SHALL conform to at least one profile defined in the implementation guide. It is possible to profile  backbone element (e.g. part of a resource), using the [http://hl7.org/fhir/StructureDefinition/elementdefinition-profile-element](http://hl7.org/fhir/extensions/StructureDefinition-elementdefinition-profile-element.html) extension.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.type.profile.value",
                  "text": "Profiles (StructureDefinition or IG) - one must apply",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "uri"
                }
              ],
              "linkId": "ElementDefinition.type.targetProfile",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.type.targetProfile-flyover",
                  "text": "Used when the type is \"Reference\" or \"canonical\", and identifies a profile structure or implementation Guide that applies to the target of the reference this element refers to. If any profiles are specified, then the content must conform to at least one of them. The URL can be a local reference - to a contained StructureDefinition, or a reference to another StructureDefinition or Implementation Guide by a canonical URL. When an implementation guide is specified, the target resource SHALL conform to at least one profile defined in the implementation guide.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.type.targetProfile.value",
                  "text": "Profile (StructureDefinition or IG) on the Reference/canonical target - one must apply",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 0
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "code"
                }
              ],
              "linkId": "ElementDefinition.type.aggregation",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.type.aggregation-flyover",
                  "text": "If the type is a reference to another resource, how the resource is or can be aggregated - is it a contained resource, or a reference, and if the context is a bundle, is it included in the bundle. See [Aggregation Rules](elementdefinition.html#aggregation) for further clarification.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.type.aggregation.value",
                  "text": "aggregation",
                  "type": "coding",
                  "required": false,
                  "repeats": false,
                  "answerConstraint": "optionsOrType"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "code"
                }
              ],
              "linkId": "ElementDefinition.type.versioning",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.type.versioning-flyover",
                  "text": "Whether this reference needs to be version specific or version independent, or whether either can be used. The base specification never makes a rule as to which form is allowed, but implementation guides may do this. See [Aggregation Rules](elementdefinition.html#aggregation) for further clarification.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.type.versioning.value",
                  "text": "versioning",
                  "type": "coding",
                  "required": false,
                  "repeats": false,
                  "answerConstraint": "optionsOrType"
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            }
          ],
          "linkId": "ElementDefinition.defaultValue[x]",
          "text": "Specified value if missing from instance",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.defaultValue[x]-flyover",
              "text": "The value that should be used if there is no value stated in the instance (e.g. \u0027if not otherwise specified, the abstract is false\u0027). Specifying a default value means that the property can never been unknown - it must always have a value. Further, the default value can never be changed, or changed in constraints on content models. Defining default values creates many difficulties in implementation (e.g. when is a value missing?). For these reasons, default values are (and should be) used extremely sparingly. \n\nNo default values are ever defined in the FHIR specification, nor can they be defined in constraints (\"profiles\") on data types or resources. This element only exists so that default values may be defined in logical models.\r\n  This element should only be used on child elements of complex data elements.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.defaultValue[x]._type",
              "text": "type",
              "type": "coding",
              "required": false,
              "repeats": false,
              "answerConstraint": "optionsOnly",
              "answerValueSet": "#vs2",
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "binary"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "boolean"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "boolean",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "code"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "default value[x]",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "decimal"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "instant"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.integer64",
                  "text": "Primitive Type integer64",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "integer64-display",
                      "text": "Typically this is used for record counters (e.g. database keys)",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "integer64-flyover",
                      "text": "A very large whole number",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "integer64.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.id-flyover",
                          "text": "unique id for the element within a resource (for internal references)",
                          "type": "display"
                        },
                        {
                          "linkId": "integer64.id.value",
                          "text": "xml:id (or equivalent in JSON)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "integer64.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.defaultValue[x]._null.integer64.value",
                      "text": "Primitive value for integer64",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.value-flyover",
                          "text": "The actual value",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "time"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "time",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Address"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.line",
                      "text": "line:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.city",
                      "text": "city:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.state",
                      "text": "state:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.postalCode",
                      "text": "post code:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.country",
                      "text": "country:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.use",
                      "text": "use:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Annotation"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Attachment"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "CodeableConcept"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.coding",
                      "text": "code:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.CodeableReference",
                  "text": "Reference to a resource or a concept",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "CodeableReference-flyover",
                      "text": "A reference to a resource (by instance), or instead, a reference to a concept defined in a terminology or ontology (by class).",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "CodeableReference.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "CodeableReference.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "CodeableReference.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "CodeableReference.concept",
                      "text": "Reference to a concept (by class)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.concept-flyover",
                          "text": "A reference to a concept - e.g. the information is identified by its general class to the degree of precision found in the terminology.",
                          "type": "display"
                        },
                        {
                          "linkId": "CodeableReference.concept.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "CodeableReference.concept.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "CodeableReference.reference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.reference-flyover",
                          "text": "A reference to a resource the provides exact details about the information being referenced.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "CodeableReference.reference.value",
                          "text": "Reference to a resource (by instance)",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Coding"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "ContactPoint"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "type:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.use",
                      "text": "use:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Name"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.family",
                      "text": "family:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.given",
                      "text": "given:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Identifier"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.label",
                      "text": "label:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Period"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.low",
                      "text": "start:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.end",
                      "text": "end:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Range"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.low",
                      "text": "low:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.high",
                      "text": "high:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Ratio"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.numerator",
                      "text": "numerator:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.denominator",
                      "text": "denominator:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.RatioRange",
                  "text": "Range of ratio values",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "RatioRange-display",
                      "text": "The stated low and high value are assumed to have arbitrarily high precision when it comes to determining which values are in the range. I.e. 1.99 is not in the range 2 -\u003e 3.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "RatioRange-flyover",
                      "text": "A range of ratios expressed as a low and high numerator and a denominator.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RatioRange.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "RatioRange.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.lowNumerator",
                      "text": "Low Numerator limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.lowNumerator-flyover",
                          "text": "The value of the low limit numerator. If the low element is missing, the low boundary is not known.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.highNumerator",
                      "text": "High Numerator limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.highNumerator-flyover",
                          "text": "The value of the high limit numerator. If the high element is missing, the high boundary is not known.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.highNumerator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.highNumerator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.denominator",
                      "text": "Denominator value",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.denominator-flyover",
                          "text": "The value of the denominator.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.denominator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.denominator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Reference"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                          "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                        }
                      ],
                      "linkId": "ElementDefinition.defaultValue[x]._null.value",
                      "type": "reference",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "SampledData"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group"
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Schedule"
                    }
                  ],
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.date",
                      "text": "date:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "Patient"
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "Practitioner"
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "RelatedPerson"
                        }
                      ],
                      "linkId": "ElementDefinition.defaultValue[x]._null.author",
                      "text": "author:",
                      "type": "reference",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.ContactDetail",
                  "text": "Contact information",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ContactDetail-flyover",
                      "text": "Specifies contact information for a person or organization.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ContactDetail.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ContactDetail.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ContactDetail.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.name-flyover",
                          "text": "The name of an individual to contact. If there is no named individual, the telecom information is for the organization as a whole.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.name.value",
                          "text": "Name of an individual to contact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "ContactPoint"
                        }
                      ],
                      "linkId": "ContactDetail.telecom",
                      "text": "Contact details for individual or organization",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.telecom-flyover",
                          "text": "The contact details for the individual (if a name was provided) or the organization.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.telecom.system",
                          "text": "type:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ContactDetail.telecom.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ContactDetail.telecom.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.DataRequirement",
                  "text": "Describes a required data item",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "DataRequirement-flyover",
                      "text": "Describes a required data item for evaluation in terms of the type of data, and optional code or date-based filters of the data.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "DataRequirement.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "DataRequirement.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "DataRequirement.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.type-flyover",
                          "text": "The type of the required data, specified as the type name of a resource. For profiles, this value is set to the type of the base resource of the profile.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "DataRequirement.profile",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.profile-flyover",
                          "text": "The profile of the required data, specified as the uri of the profile definition.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.profile.value",
                          "text": "The profile of the required data",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "DataRequirement.subject[x]",
                      "text": "E.g. Patient, Practitioner, RelatedPerson, Organization, Location, Device",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.subject[x]-flyover",
                          "text": "The intended subjects of the data requirement. If this element is not provided, a Patient subject is assumed. The subject of a data requirement is critical, as the data being specified is determined with respect to a particular subject. This corresponds roughly to the notion of a Compartment in that it limits what data is available based on its relationship to the subject. In CQL, this corresponds to the context declaration.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.subject[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs3",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "CodeableConcept"
                                }
                              ],
                              "linkId": "DataRequirement.subject[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "DataRequirement.subject[x]._null.coding",
                                  "text": "code:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "DataRequirement.subject[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "DataRequirement.subject[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Group"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "DataRequirement.subject[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "DataRequirement.mustSupport",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.mustSupport-flyover",
                          "text": "Indicates that specific elements of the type are referenced by the knowledge module and must be supported by the consumer in order to obtain an effective evaluation. This does not mean that a value is required for this element, only that the consuming system must understand the element and be able to provide values for it if they are available. \n\nThe value of mustSupport SHALL be a FHIRPath resolvable on the type of the DataRequirement. The path SHALL consist only of identifiers, constant indexers, and .resolve() (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details).",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.mustSupport.value",
                          "text": "Indicates specific structure elements that are referenced by the knowledge module",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.DataRequirement.codeFilter",
                      "text": "What codes are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter-flyover",
                          "text": "Code filters specify additional constraints on the data, specifying the value set of interest for a particular element of the data. Each code filter defines an additional constraint on the data, i.e. code filters are AND\u0027ed, not OR\u0027ed.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.codeFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.path-flyover",
                              "text": "The code-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type code, Coding, or CodeableConcept. The path attribute contains a [Simple FHIRPath Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.path.value",
                              "text": "A code-valued attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.searchParam-flyover",
                              "text": "A token parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type code, Coding, or CodeableConcept.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.searchParam.value",
                              "text": "A coded (token) parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.valueSet",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.valueSet-flyover",
                              "text": "The valueset for the code filter. The valueSet and code elements are additive. If valueSet is specified, the filter will return only those data items for which the value of the code-valued element specified in the path is a member of the specified valueset.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.valueSet.value",
                              "text": "ValueSet for the filter",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Coding"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.code",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.code-flyover",
                              "text": "The codes for the code filter. If values are given, the filter will return only those data items for which the code-valued attribute specified by the path has a value that is one of the specified codes. If codes are specified in addition to a value set, the filter returns items matching a code in the value set or one of the specified codes.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.code.value",
                              "text": "What code is expected",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.DataRequirement.dateFilter",
                      "text": "What dates/date ranges are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter-flyover",
                          "text": "Date filters specify additional constraints on the data in terms of the applicable date range for specific elements. Each date filter specifies an additional constraint on the data, i.e. date filters are AND\u0027ed, not OR\u0027ed.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.dateFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.path-flyover",
                              "text": "The date-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type date, dateTime, Period, Schedule, or Timing. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.path.value",
                              "text": "A date-valued attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.searchParam-flyover",
                              "text": "A date parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type date, dateTime, Period, Schedule, or Timing.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.searchParam.value",
                              "text": "A date valued parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.value[x]",
                          "text": "The value of the filter, as a Period, DateTime, or Duration value",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.value[x]-flyover",
                              "text": "The value of the filter. If period is specified, the filter will return only those data items that fall within the bounds determined by the Period, inclusive of the period boundaries. If dateTime is specified, the filter will return only those data items that are equal to the specified dateTime. If a Duration is specified, the filter will return only those data items that fall within Duration before now.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.value[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs4",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Period"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.low",
                                      "text": "start:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.end",
                                      "text": "end:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.DataRequirement.valueFilter",
                      "text": "What values are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter-flyover",
                          "text": "Value filters specify additional constraints on the data for elements other than code-valued or date-valued. Each value filter specifies an additional constraint on the data (i.e. valueFilters are AND\u0027ed, not OR\u0027ed).",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.valueFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.path-flyover",
                              "text": "The attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of a type that is comparable to the valueFilter.value[x] element for the filter. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.path.value",
                              "text": "An attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.searchParam-flyover",
                              "text": "A search parameter defined on the specified type of the DataRequirement, and which searches on elements of a type compatible with the type of the valueFilter.value[x] for the filter.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.searchParam.value",
                              "text": "A parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.comparator",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.comparator-flyover",
                              "text": "The comparator to be used to determine whether the value is matching.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.comparator.value",
                              "text": "comparator",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.value[x]",
                          "text": "The value of the filter, as a Period, DateTime, or Duration value",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.value[x]-flyover",
                              "text": "The value of the filter.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.value[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs5",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Period"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.low",
                                      "text": "start:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.end",
                                      "text": "end:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "DataRequirement.limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.limit-flyover",
                          "text": "Specifies a maximum number of results that are required (uses the _count search parameter). This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\".",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.limit.value",
                          "text": "Number of results",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.DataRequirement.sort",
                      "text": "Order of the results",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "DataRequirement.sort-display",
                          "text": "This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\". When multiple sorts are specified, they are applied in the order they appear in the resource.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.sort-flyover",
                          "text": "Specifies the order of the results to be returned.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.sort.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.sort.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.sort.path",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.path-flyover",
                              "text": "The attribute of the sort. The specified path must be resolvable from the type of the required data. The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements. Note that the index must be an integer constant.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.path.value",
                              "text": "The name of the attribute to perform the sort",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "DataRequirement.sort.direction",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.direction-flyover",
                              "text": "The direction of the sort, ascending or descending.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.direction.value",
                              "text": "direction",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.Expression",
                  "text": "An expression that can be used to generate a value",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Expression-flyover",
                      "text": "A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Expression.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.description",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.description-flyover",
                          "text": "A brief, natural language description of the condition that effectively communicates the intended semantics.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.description.value",
                          "text": "Natural language description of the condition",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "Expression.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.name-flyover",
                          "text": "A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.name.value",
                          "text": "name",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "Expression.language",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.language-flyover",
                          "text": "The media type of the language for the expression.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.language.value",
                          "text": "language",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.expression",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.expression-flyover",
                          "text": "An expression in the specified language that returns a value. If Expression.expression and Expression.reference are both present, the Expression.expression might just be a name pointing something within the referenced content.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.expression.value",
                          "text": "Expression in specified language",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "Expression.reference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.reference-flyover",
                          "text": "A URI that defines where the expression is found. If both a reference and an expression is found, the reference SHALL point to the same expression.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.reference.value",
                          "text": "Where the expression is found",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.ParameterDefinition",
                  "text": "Definition of a parameter to a module",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ParameterDefinition-flyover",
                      "text": "The parameters to the module. This collection specifies both the input and output parameters. Input parameters are provided by the caller as part of the $evaluate operation. Output parameters are included in the GuidanceResponse.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ParameterDefinition.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.name-flyover",
                          "text": "The name of the parameter used to allow access to the value of the parameter in evaluation contexts.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.name.value",
                          "text": "name",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.use",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.use-flyover",
                          "text": "Whether the parameter is input or output for the module.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.use.value",
                          "text": "use",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "ParameterDefinition.min",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.min-flyover",
                          "text": "The minimum number of times this parameter SHALL appear in the request or response.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.min.value",
                          "text": "Minimum cardinality",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.max",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.max-flyover",
                          "text": "The maximum number of times this element is permitted to appear in the request or response.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.max.value",
                          "text": "Maximum cardinality (a number of *)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.documentation",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.documentation-flyover",
                          "text": "A brief discussion of what the parameter is for and how it is used by the module.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.documentation.value",
                          "text": "A brief description of the parameter",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.type-flyover",
                          "text": "The type of the parameter.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "ParameterDefinition.profile",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.profile-flyover",
                          "text": "If specified, this indicates a profile that the input data must conform to, or that the output data will conform to.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.profile.value",
                          "text": "What profile the value is expected to be",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.RelatedArtifact",
                  "text": "Related artifacts for a knowledge resource",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "RelatedArtifact-display",
                      "text": "Each related artifact is either an attachment, or a reference to another knowledge resource, but not both.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "RelatedArtifact-flyover",
                      "text": "Related artifacts such as additional documentation, justification, or bibliographic references.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "RelatedArtifact.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "RelatedArtifact.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.type-flyover",
                          "text": "The type of relationship to the related artifact. The presence of both sides of a relationship type (e.g. successor and predecessor) is required to support use cases where one side of a relationship is not represented in FHIR. However, this feature SHALL NOT be used to create bi-directional resource links in FHIR instances. Specifically, following the methodology of \"new points to old\" and \"many points to one\", when using related artifact elements to describe and reference FHIR resources, the type element SHALL be drawn from the fhir-related-artifact-type ValueSet.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "RelatedArtifact.classifier",
                      "text": "Additional classifiers",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.classifier-flyover",
                          "text": "Provides additional classifiers of the related artifact.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.classifier.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RelatedArtifact.classifier.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.label",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.label-flyover",
                          "text": "A short label that can be used to reference the citation from elsewhere in the containing artifact, such as a footnote index.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.label.value",
                          "text": "Short label",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.display",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.display-flyover",
                          "text": "A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.display.value",
                          "text": "Brief description of the related artifact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.citation",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.citation-flyover",
                          "text": "A bibliographic citation for the related artifact. This text SHOULD be formatted according to an accepted citation format. Additional structured information about citations should be captured as extensions.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.citation.value",
                          "text": "Bibliographic citation for the artifact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Attachment"
                        }
                      ],
                      "linkId": "RelatedArtifact.document",
                      "text": "What document is being referenced",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.document-flyover",
                          "text": "The document being referenced, represented as an attachment. This is exclusive with the resource element.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "RelatedArtifact.resource",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.resource-flyover",
                          "text": "The related artifact, such as a library, value set, profile, or other knowledge resource. If the type is predecessor, this is a reference to the succeeding knowledge resource. If the type is successor, this is a reference to the prior knowledge resource.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.resource.value",
                          "text": "What artifact is being referenced",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "RelatedArtifact.resourceReference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.resourceReference-flyover",
                          "text": "The related artifact, if the artifact is not a canonical resource, or a resource reference to a canonical resource. If both resource and resourceReference are present, they SHOULD be consistent and reference the same resource. Although relatedArtifact is intended to support references to definitional resources, there are cases where non-definitional resources can be definitional (such as Location where the kind is mode). Related artifacts SHOULD be used to reference definitional resources, and profiles SHOULD be used to make that explicit for particular use cases.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Resource"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "RelatedArtifact.resourceReference.value",
                          "text": "What artifact, if not a conformance resource",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "RelatedArtifact.publicationStatus",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationStatus-flyover",
                          "text": "The publication status of the artifact being referred to.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.publicationStatus.value",
                          "text": "publication status",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "datetime"
                        }
                      ],
                      "linkId": "RelatedArtifact.publicationDate",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationDate-flyover",
                          "text": "The date of publication of the artifact being referred to.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.publicationDate.value",
                          "text": "Date of publication of the artifact being referred to",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.TriggerDefinition",
                  "text": "Defines an expected trigger for a module",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "TriggerDefinition-display",
                      "text": "If an event is a named-event, it means the event is completely pre-coordinated, and no other information can be specified for the event. If the event is one of the data- events, the data and condition elements specify the triggering criteria. The data element specifies the structured component, and the condition element provides additional optional refinement of that structured component. If the event is periodic, the timing element defines when the event is triggered. For both data- and periodic events, a name can be provided as a shorthand for the formal semantics provided by the other elements.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "TriggerDefinition-flyover",
                      "text": "A description of a triggering event. Triggering events can be named events, data events, or periodic, as determined by the type element.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "TriggerDefinition.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "TriggerDefinition.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "TriggerDefinition.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.type-flyover",
                          "text": "The type of triggering event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "TriggerDefinition.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.name-flyover",
                          "text": "A formal name for the event. This may be an absolute URI that identifies the event formally (e.g. from a trigger registry), or a simple relative URI that identifies the event in a local context. An event name can be provided for all event types, but is required for named events. If a name is provided for a type other than named events, it is considered to be a shorthand for the semantics described by the formal description of the event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.name.value",
                          "text": "Name or URI that identifies the event",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "TriggerDefinition.code",
                      "text": "Coded definition of the event",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.code-flyover",
                          "text": "A code that identifies the event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.code.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "TriggerDefinition.code.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "TriggerDefinition.subscriptionTopic",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.subscriptionTopic-flyover",
                          "text": "A reference to a SubscriptionTopic resource that defines the event. If this element is provided, no other information about the trigger definition may be supplied.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.subscriptionTopic.value",
                          "text": "What event",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "TriggerDefinition.timing[x]",
                      "text": "Timing of the event",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.timing[x]-flyover",
                          "text": "The timing of the event (if this is a periodic trigger).",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.timing[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs6",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Schedule"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.date",
                                  "text": "date:",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Patient"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Practitioner"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "RelatedPerson"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null.author",
                                  "text": "author:",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Schedule"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "datetime"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "datetime"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.TriggerDefinition.data",
                      "text": "Triggering data of the event (multiple \u003d \u0027and\u0027)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "TriggerDefinition.data-display",
                          "text": "This element shall be present for any data type trigger.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.data-flyover",
                          "text": "The triggering data of the event (if this is a data trigger). If more than one data is requirement is specified, then all the data requirements must be true.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.defaultValue[x]._null.TriggerDefinition.condition",
                      "text": "Whether the event triggers (boolean expression)",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "linkId": "TriggerDefinition.condition-display",
                          "text": "This element can be only be specified for data type triggers and provides additional semantics for the trigger. The context available within the condition is based on the type of data event. For all events, the current resource will be available as context. In addition, for modification events, the previous resource will also be available. The expression may be inlined, or may be a simple absolute URI, which is a reference to a named expression within a logic library referenced by a library element or extension within the containing resource. If the expression is a FHIR Path expression, it evaluates in the context of a resource of one of the type identified in the data requirement, and may also refer to the variable %previous for delta comparisons on events of type data-changed, data-modified, and data-deleted which will always have the same type.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.condition-flyover",
                          "text": "A boolean-valued expression that is evaluated in the context of the container of the trigger definition and returns whether or not the trigger fires.",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.UsageContext",
                  "text": "Describes the context of use for a conformance or knowledge resource",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "UsageContext-flyover",
                      "text": "Specifies clinical/business/etc. metadata that can be used to retrieve, index and/or categorize an artifact. This metadata can either be specific to the applicable population (e.g., age category, DRG) or the specific context of care (e.g., venue, care setting, provider of care).",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "UsageContext.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "UsageContext.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Coding"
                        }
                      ],
                      "linkId": "UsageContext.code",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.code-flyover",
                          "text": "A code that identifies the type of context being specified by this usage context.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.code.value",
                          "text": "Type of context being specified",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "UsageContext.value[x]",
                      "text": "Value that defines the context",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.value[x]-flyover",
                          "text": "A value that defines the context specified in this context of use. The interpretation of the value is defined by the code.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.value[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs7",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "CodeableConcept"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.coding",
                                  "text": "code:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Quantity"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.comparator",
                                  "text": "comp:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.value",
                                  "text": "value:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.units",
                                  "text": "units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.code",
                                  "text": "coded units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.system",
                                  "text": "units system:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Range"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.low",
                                  "text": "low:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.high",
                                  "text": "high:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.units",
                                  "text": "units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "PlanDefinition, ResearchStudy, InsurancePlan, HealthcareService, Group, Location, Organization"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "UsageContext.value[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.Availability",
                  "text": "Availability data for an {item}",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Availability-flyover",
                      "text": "Availability data for an {item}.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Availability.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Availability.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Availability.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.Availability.availableTime",
                      "text": "Times the {item} is available",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.availableTime-flyover",
                          "text": "Times the {item} is available.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.availableTime.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Availability.availableTime.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "Availability.availableTime.daysOfWeek",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.daysOfWeek-flyover",
                              "text": "mon | tue | wed | thu | fri | sat | sun.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.daysOfWeek.value",
                              "text": "days of week",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "boolean"
                            }
                          ],
                          "linkId": "Availability.availableTime.allDay",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.allDay-flyover",
                              "text": "Always available? i.e. 24 hour service.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.allDay.value",
                              "text": "Always available? i.e. 24 hour service",
                              "type": "boolean",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "time"
                            }
                          ],
                          "linkId": "Availability.availableTime.availableStartTime",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.availableStartTime-flyover",
                              "text": "Opening time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.availableStartTime.value",
                              "text": "Opening time of day (ignored if allDay \u003d true)",
                              "type": "time",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "time"
                            }
                          ],
                          "linkId": "Availability.availableTime.availableEndTime",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.availableEndTime-flyover",
                              "text": "Closing time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.availableEndTime.value",
                              "text": "Closing time of day (ignored if allDay \u003d true)",
                              "type": "time",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.Availability.notAvailableTime",
                      "text": "Not available during this time due to provided reason",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.notAvailableTime-flyover",
                          "text": "Not available during this time due to provided reason.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Availability.notAvailableTime.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.description",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.description-flyover",
                              "text": "Reason presented to the user explaining why time not available. The reason will generally be provided to give the textual reason for displaying when the {item} is not available, e.g. \u0027Closed public holidays\u0027 or \u0027Independence Day\u0027. In cases such as this, the `during` might not be included and local knowledge would be required in such cases (as don\u0027t desire to keep updating when the holiday occurs each year).\n\ne.g.2: \u0027Closed for maintenance over the summer\u0027 for this example you would want to include the `during` period, unless this was a university hospital and the \"summer\" period was well known, but would recommend its inclusion anyway.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.description.value",
                              "text": "Reason presented to the user explaining why time not available",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Period"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.during",
                          "text": "Service not available during this period",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.during-flyover",
                              "text": "Service not available during this period.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.during.low",
                              "text": "start:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Availability.notAvailableTime.during.end",
                              "text": "end:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.ExtendedContactDetail",
                  "text": "Contact information",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "ExtendedContactDetail-display",
                      "text": "This datatype may be sparsely populated, i.e. only contain a purpose and phone number or address, but other cases could be completed filled out.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ExtendedContactDetail-flyover",
                      "text": "Specifies contact information for a specific purpose over a period of time, might be handled/monitored by a specific named person or organization.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ExtendedContactDetail.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.purpose",
                      "text": "The type of contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.purpose-flyover",
                          "text": "The purpose/type of contact. If no purpose is defined, then these contact details may be used for any purpose.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.purpose.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ExtendedContactDetail.purpose.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Name"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.name",
                      "text": "Name of an individual to contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.name-flyover",
                          "text": "The name of an individual to contact, some types of contact detail are usually blank. If there is no named individual, the telecom/address information is not generally monitored by a specific individual.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.family",
                          "text": "family:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.given",
                          "text": "given:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "ContactPoint"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.telecom",
                      "text": "Contact details (e.g.phone/fax/url)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.telecom-flyover",
                          "text": "The contact details application for the purpose defined.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.system",
                          "text": "type:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Address"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.address",
                      "text": "Address for the contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.address-flyover",
                          "text": "Address for the contact. More than 1 address would be for different purposes, and thus should be entered as a different entry,.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.line",
                          "text": "line:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.city",
                          "text": "city:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.state",
                          "text": "state:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.postalCode",
                          "text": "post code:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.country",
                          "text": "country:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.organization",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.organization-flyover",
                          "text": "This contact detail is handled/monitored by a specific organization. If the name is provided in the contact, then it is referring to the named individual within this organization.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Organization"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.organization.value",
                          "text": "This contact detail is handled/monitored by a specific organization",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Period"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.period",
                      "text": "Period that this contact was valid for usage",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.period-flyover",
                          "text": "Period that this contact was valid for usage. If the details have multiple periods, then enter in a new ExtendedContact with the new period.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.period.low",
                          "text": "start:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.period.end",
                          "text": "end:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null.Dosage",
                  "text": "How the medication is/was taken or should be taken",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Dosage-flyover",
                      "text": "Indicates how the medication is/was taken or should be taken by the patient.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Dosage.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "linkId": "Dosage.modifierExtension",
                      "text": "Extensions that cannot be ignored even if unrecognized",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.modifierExtension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element\u0027s descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "Dosage.sequence",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.sequence-flyover",
                          "text": "Indicates the order in which the dosage instructions should be applied or interpreted.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.sequence.value",
                          "text": "The order of the dosage instructions",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.text",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.text-flyover",
                          "text": "Free text dosage instructions e.g. SIG.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.text.value",
                          "text": "Free text dosage instructions e.g. SIG",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.additionalInstruction",
                      "text": "Supplemental instruction or warnings to the patient - e.g. \"with meals\", \"may cause drowsiness\"",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.additionalInstruction-flyover",
                          "text": "Supplemental instructions to the patient on how to take the medication  (e.g. \"with meals\" or\"take half to one hour before food\") or warnings for the patient about the medication (e.g. \"may cause drowsiness\" or \"avoid exposure of skin to direct sunlight or sunlamps\"). Information about administration or preparation of the medication (e.g. \"infuse as rapidly as possibly via intraperitoneal port\" or take \"immediately following drug x\") should be populated in dosage.text.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.additionalInstruction.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.additionalInstruction.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.patientInstruction",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.patientInstruction-flyover",
                          "text": "Instructions in terms that are understood by the patient or consumer.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.patientInstruction.value",
                          "text": "Patient or consumer oriented instructions",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Schedule"
                        }
                      ],
                      "linkId": "Dosage.timing",
                      "text": "When medication should be administered",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.timing-flyover",
                          "text": "When medication should be administered. This attribute might not always be populated while the Dosage.text is expected to be populated.  If both are populated, then the Dosage.text should reflect the content of the Dosage.timing.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.timing.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.timing.date",
                          "text": "date:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Patient"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Practitioner"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "RelatedPerson"
                            }
                          ],
                          "linkId": "Dosage.timing.author",
                          "text": "author:",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "boolean"
                        }
                      ],
                      "linkId": "Dosage.asNeeded",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.asNeeded-flyover",
                          "text": "Indicates whether the Medication is only taken when needed within a specific dosing schedule (Boolean option). Can express \"as needed\" without a reason by setting the Boolean \u003d True.  In this case the CodeableConcept is not populated.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.asNeeded.value",
                          "text": "Take \"as needed\"",
                          "type": "boolean",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.asNeededFor",
                      "text": "Take \"as needed\" (for x)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.asNeededFor-flyover",
                          "text": "Indicates whether the Medication is only taken based on a precondition for taking the Medication (CodeableConcept). Can express \"as needed\" with a reason by including the CodeableConcept.  In this case the Boolean is assumed to be False, then the dose is given according to the schedule and is not \"prn\" or \"as needed\".",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.asNeededFor.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.asNeededFor.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.site",
                      "text": "Body site to administer to",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.site-flyover",
                          "text": "Body site to administer to. If the use case requires attributes from the BodySite resource (e.g. to identify and track separately) then use the standard extension [http://hl7.org/fhir/StructureDefinition/bodySite](http://hl7.org/fhir/extensions/StructureDefinition-bodySite.html).  May be a summary code, or a reference to a very precise definition of the location, or both.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.site.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.site.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.route",
                      "text": "How drug should enter body",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.route-flyover",
                          "text": "How drug should enter body.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.route.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.route.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.method",
                      "text": "Technique for administering medication",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.method-flyover",
                          "text": "Technique for administering medication. Terminologies used often pre-coordinate this term with the route and or form of administration.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.method.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.method.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.defaultValue[x]._null.Dosage.doseAndRate",
                      "text": "Amount of medication administered, to be administered or typical amount to be administered",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.doseAndRate-flyover",
                          "text": "Depending on the resource,this is the amount of medication administered, to  be administered or typical amount to be administered.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Dosage.doseAndRate.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.type",
                          "text": "The kind of dose or rate specified",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.type-flyover",
                              "text": "The kind of dose or rate specified, for example, ordered or calculated.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.type.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.type.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.dose[x]",
                          "text": "Amount of medication per dose",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.dose[x]-flyover",
                              "text": "Amount of medication per dose. Note that this specifies the quantity of the specified medication, not the quantity for each active ingredient(s). Each ingredient amount can be communicated in the Medication resource. For example, if one wants to communicate that a tablet was 375 mg, where the dose was one tablet, you can use the Medication resource to document that the tablet was comprised of 375 mg of drug XYZ. Alternatively if the dose was 375 mg, then you may only need to use the Medication resource to indicate this was a tablet. If the example were an IV such as dopamine and you wanted to communicate that 400mg of dopamine was mixed in 500 ml of some IV solution, then this would all be communicated in the Medication resource. If the administration is not intended to be instantaneous (rate is present or timing has a duration), this can be specified to convey the total amount to be administered over the period of time as indicated by the schedule e.g. 500 ml in dose, with timing used to convey that this should be done over 4 hours.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.dose[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs8",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Range"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.dose[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.low",
                                      "text": "low:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.high",
                                      "text": "high:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.dose[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.rate[x]",
                          "text": "Amount of medication per unit of time",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.rate[x]-flyover",
                              "text": "Amount of medication per unit of time. It is possible to supply both a rate and a doseQuantity to provide full details about how the medication is to be administered and supplied. If the rate is intended to change over time, depending on local rules/regulations, each change should be captured as a new version of the MedicationRequest with an updated rate, or captured with a new MedicationRequest with the new rate.\r\rIt is possible to specify a rate over time (for example, 100 ml/hour) using either the rateRatio and rateQuantity.  The rateQuantity approach requires systems to have the capability to parse UCUM grammar where ml/hour is included rather than a specific ratio where the time is specified as the denominator.  Where a rate such as 500ml over 2 hours is specified, the use of rateRatio may be more semantically correct than specifying using a rateQuantity of 250 mg/hour.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.rate[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs9",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Ratio"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.numerator",
                                      "text": "numerator:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.denominator",
                                      "text": "denominator:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Range"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.low",
                                      "text": "low:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.high",
                                      "text": "high:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Ratio"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerPeriod",
                      "text": "Upper limit on medication per unit of time",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerPeriod-flyover",
                          "text": "Upper limit on medication per unit of time. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example \"2 tablets every 4 hours to a maximum of 8/day\".",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.numerator",
                          "text": "numerator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.denominator",
                          "text": "denominator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerAdministration",
                      "text": "Upper limit on medication per administration",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerAdministration-flyover",
                          "text": "Upper limit on medication per administration. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example, a body surface area related dose with a maximum amount, such as 1.5 mg/m2 (maximum 2 mg) IV over 5 – 10 minutes would have doseQuantity of 1.5 mg/m2 and maxDosePerAdministration of 2 mg.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerLifetime",
                      "text": "Upper limit on medication per lifetime of the patient",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerLifetime-flyover",
                          "text": "Upper limit on medication per lifetime of the patient.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.defaultValue[x]._null",
                  "type": "group"
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.meaningWhenMissing",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.meaningWhenMissing-flyover",
              "text": "The Implicit meaning that is to be understood when this element is missing (e.g. \u0027when this element is missing, the period is ongoing\u0027). Implicit meanings for missing values can only be specified on a resource, data type, or extension definition, and never in a profile that applies to one of these. An implicit meaning for a missing value can never be changed, and specifying one has the consequence that constraining its use in profiles eliminates use cases as possibilities, not merely moving them out of scope.\r\n  This element should only be used on child elements of complex data elements.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.meaningWhenMissing.value",
              "text": "Implicit meaning when this element is missing",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.orderMeaning",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.orderMeaning-flyover",
              "text": "If present, indicates that the order of the repeating element has meaning and describes what that meaning is.  If absent, it means that the order of the element has no meaning. This element can only be asserted on repeating elements and can only be introduced when defining resources or data types.  It can be further refined profiled elements but if absent in the base type, a profile cannot assert meaning.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.orderMeaning.value",
              "text": "What the order of the elements means",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            }
          ],
          "linkId": "ElementDefinition.fixed[x]",
          "text": "Value must be exactly this",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.fixed[x]-flyover",
              "text": "Specifies a value that SHALL be exactly the value  for this element in the instance, if present. For purposes of comparison, non-significant whitespace is ignored, and all values must be an exact match (case and accent sensitive). Missing elements/attributes must also be missing. This is not recommended for Coding and CodeableConcept since these often have highly contextual properties such as version or display.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.fixed[x]._type",
              "text": "type",
              "type": "coding",
              "required": false,
              "repeats": false,
              "answerConstraint": "optionsOnly",
              "answerValueSet": "#vs10",
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "binary"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "boolean"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "boolean",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "code"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "fixed[x]",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "decimal"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "instant"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.integer64",
                  "text": "Primitive Type integer64",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "integer64-display",
                      "text": "Typically this is used for record counters (e.g. database keys)",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "integer64-flyover",
                      "text": "A very large whole number",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "integer64.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.id-flyover",
                          "text": "unique id for the element within a resource (for internal references)",
                          "type": "display"
                        },
                        {
                          "linkId": "integer64.id.value",
                          "text": "xml:id (or equivalent in JSON)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "integer64.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.fixed[x]._null.integer64.value",
                      "text": "Primitive value for integer64",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.value-flyover",
                          "text": "The actual value",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "time"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "time",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Address"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.line",
                      "text": "line:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.city",
                      "text": "city:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.state",
                      "text": "state:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.postalCode",
                      "text": "post code:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.country",
                      "text": "country:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.use",
                      "text": "use:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Annotation"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Attachment"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "CodeableConcept"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.coding",
                      "text": "code:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.CodeableReference",
                  "text": "Reference to a resource or a concept",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "CodeableReference-flyover",
                      "text": "A reference to a resource (by instance), or instead, a reference to a concept defined in a terminology or ontology (by class).",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "CodeableReference.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "CodeableReference.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "CodeableReference.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "CodeableReference.concept",
                      "text": "Reference to a concept (by class)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.concept-flyover",
                          "text": "A reference to a concept - e.g. the information is identified by its general class to the degree of precision found in the terminology.",
                          "type": "display"
                        },
                        {
                          "linkId": "CodeableReference.concept.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "CodeableReference.concept.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "CodeableReference.reference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.reference-flyover",
                          "text": "A reference to a resource the provides exact details about the information being referenced.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "CodeableReference.reference.value",
                          "text": "Reference to a resource (by instance)",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Coding"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "ContactPoint"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "type:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.use",
                      "text": "use:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Name"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.family",
                      "text": "family:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.given",
                      "text": "given:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Identifier"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.label",
                      "text": "label:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Period"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.low",
                      "text": "start:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.end",
                      "text": "end:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Range"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.low",
                      "text": "low:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.high",
                      "text": "high:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Ratio"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.numerator",
                      "text": "numerator:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.denominator",
                      "text": "denominator:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.RatioRange",
                  "text": "Range of ratio values",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "RatioRange-display",
                      "text": "The stated low and high value are assumed to have arbitrarily high precision when it comes to determining which values are in the range. I.e. 1.99 is not in the range 2 -\u003e 3.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "RatioRange-flyover",
                      "text": "A range of ratios expressed as a low and high numerator and a denominator.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RatioRange.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "RatioRange.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.lowNumerator",
                      "text": "Low Numerator limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.lowNumerator-flyover",
                          "text": "The value of the low limit numerator. If the low element is missing, the low boundary is not known.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.highNumerator",
                      "text": "High Numerator limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.highNumerator-flyover",
                          "text": "The value of the high limit numerator. If the high element is missing, the high boundary is not known.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.highNumerator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.highNumerator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.denominator",
                      "text": "Denominator value",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.denominator-flyover",
                          "text": "The value of the denominator.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.denominator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.denominator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Reference"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                          "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                        }
                      ],
                      "linkId": "ElementDefinition.fixed[x]._null.value",
                      "type": "reference",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "SampledData"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group"
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Schedule"
                    }
                  ],
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.date",
                      "text": "date:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "Patient"
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "Practitioner"
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "RelatedPerson"
                        }
                      ],
                      "linkId": "ElementDefinition.fixed[x]._null.author",
                      "text": "author:",
                      "type": "reference",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.ContactDetail",
                  "text": "Contact information",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ContactDetail-flyover",
                      "text": "Specifies contact information for a person or organization.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ContactDetail.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ContactDetail.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ContactDetail.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.name-flyover",
                          "text": "The name of an individual to contact. If there is no named individual, the telecom information is for the organization as a whole.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.name.value",
                          "text": "Name of an individual to contact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "ContactPoint"
                        }
                      ],
                      "linkId": "ContactDetail.telecom",
                      "text": "Contact details for individual or organization",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.telecom-flyover",
                          "text": "The contact details for the individual (if a name was provided) or the organization.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.telecom.system",
                          "text": "type:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ContactDetail.telecom.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ContactDetail.telecom.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.DataRequirement",
                  "text": "Describes a required data item",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "DataRequirement-flyover",
                      "text": "Describes a required data item for evaluation in terms of the type of data, and optional code or date-based filters of the data.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "DataRequirement.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "DataRequirement.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "DataRequirement.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.type-flyover",
                          "text": "The type of the required data, specified as the type name of a resource. For profiles, this value is set to the type of the base resource of the profile.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "DataRequirement.profile",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.profile-flyover",
                          "text": "The profile of the required data, specified as the uri of the profile definition.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.profile.value",
                          "text": "The profile of the required data",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "DataRequirement.subject[x]",
                      "text": "E.g. Patient, Practitioner, RelatedPerson, Organization, Location, Device",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.subject[x]-flyover",
                          "text": "The intended subjects of the data requirement. If this element is not provided, a Patient subject is assumed. The subject of a data requirement is critical, as the data being specified is determined with respect to a particular subject. This corresponds roughly to the notion of a Compartment in that it limits what data is available based on its relationship to the subject. In CQL, this corresponds to the context declaration.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.subject[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs11",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "CodeableConcept"
                                }
                              ],
                              "linkId": "DataRequirement.subject[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "DataRequirement.subject[x]._null.coding",
                                  "text": "code:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "DataRequirement.subject[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "DataRequirement.subject[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Group"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "DataRequirement.subject[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "DataRequirement.mustSupport",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.mustSupport-flyover",
                          "text": "Indicates that specific elements of the type are referenced by the knowledge module and must be supported by the consumer in order to obtain an effective evaluation. This does not mean that a value is required for this element, only that the consuming system must understand the element and be able to provide values for it if they are available. \n\nThe value of mustSupport SHALL be a FHIRPath resolvable on the type of the DataRequirement. The path SHALL consist only of identifiers, constant indexers, and .resolve() (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details).",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.mustSupport.value",
                          "text": "Indicates specific structure elements that are referenced by the knowledge module",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.DataRequirement.codeFilter",
                      "text": "What codes are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter-flyover",
                          "text": "Code filters specify additional constraints on the data, specifying the value set of interest for a particular element of the data. Each code filter defines an additional constraint on the data, i.e. code filters are AND\u0027ed, not OR\u0027ed.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.codeFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.path-flyover",
                              "text": "The code-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type code, Coding, or CodeableConcept. The path attribute contains a [Simple FHIRPath Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.path.value",
                              "text": "A code-valued attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.searchParam-flyover",
                              "text": "A token parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type code, Coding, or CodeableConcept.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.searchParam.value",
                              "text": "A coded (token) parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.valueSet",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.valueSet-flyover",
                              "text": "The valueset for the code filter. The valueSet and code elements are additive. If valueSet is specified, the filter will return only those data items for which the value of the code-valued element specified in the path is a member of the specified valueset.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.valueSet.value",
                              "text": "ValueSet for the filter",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Coding"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.code",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.code-flyover",
                              "text": "The codes for the code filter. If values are given, the filter will return only those data items for which the code-valued attribute specified by the path has a value that is one of the specified codes. If codes are specified in addition to a value set, the filter returns items matching a code in the value set or one of the specified codes.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.code.value",
                              "text": "What code is expected",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.DataRequirement.dateFilter",
                      "text": "What dates/date ranges are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter-flyover",
                          "text": "Date filters specify additional constraints on the data in terms of the applicable date range for specific elements. Each date filter specifies an additional constraint on the data, i.e. date filters are AND\u0027ed, not OR\u0027ed.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.dateFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.path-flyover",
                              "text": "The date-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type date, dateTime, Period, Schedule, or Timing. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.path.value",
                              "text": "A date-valued attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.searchParam-flyover",
                              "text": "A date parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type date, dateTime, Period, Schedule, or Timing.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.searchParam.value",
                              "text": "A date valued parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.value[x]",
                          "text": "The value of the filter, as a Period, DateTime, or Duration value",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.value[x]-flyover",
                              "text": "The value of the filter. If period is specified, the filter will return only those data items that fall within the bounds determined by the Period, inclusive of the period boundaries. If dateTime is specified, the filter will return only those data items that are equal to the specified dateTime. If a Duration is specified, the filter will return only those data items that fall within Duration before now.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.value[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs12",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Period"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.low",
                                      "text": "start:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.end",
                                      "text": "end:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.DataRequirement.valueFilter",
                      "text": "What values are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter-flyover",
                          "text": "Value filters specify additional constraints on the data for elements other than code-valued or date-valued. Each value filter specifies an additional constraint on the data (i.e. valueFilters are AND\u0027ed, not OR\u0027ed).",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.valueFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.path-flyover",
                              "text": "The attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of a type that is comparable to the valueFilter.value[x] element for the filter. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.path.value",
                              "text": "An attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.searchParam-flyover",
                              "text": "A search parameter defined on the specified type of the DataRequirement, and which searches on elements of a type compatible with the type of the valueFilter.value[x] for the filter.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.searchParam.value",
                              "text": "A parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.comparator",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.comparator-flyover",
                              "text": "The comparator to be used to determine whether the value is matching.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.comparator.value",
                              "text": "comparator",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.value[x]",
                          "text": "The value of the filter, as a Period, DateTime, or Duration value",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.value[x]-flyover",
                              "text": "The value of the filter.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.value[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs13",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Period"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.low",
                                      "text": "start:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.end",
                                      "text": "end:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "DataRequirement.limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.limit-flyover",
                          "text": "Specifies a maximum number of results that are required (uses the _count search parameter). This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\".",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.limit.value",
                          "text": "Number of results",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.DataRequirement.sort",
                      "text": "Order of the results",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "DataRequirement.sort-display",
                          "text": "This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\". When multiple sorts are specified, they are applied in the order they appear in the resource.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.sort-flyover",
                          "text": "Specifies the order of the results to be returned.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.sort.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.sort.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.sort.path",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.path-flyover",
                              "text": "The attribute of the sort. The specified path must be resolvable from the type of the required data. The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements. Note that the index must be an integer constant.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.path.value",
                              "text": "The name of the attribute to perform the sort",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "DataRequirement.sort.direction",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.direction-flyover",
                              "text": "The direction of the sort, ascending or descending.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.direction.value",
                              "text": "direction",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.Expression",
                  "text": "An expression that can be used to generate a value",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Expression-flyover",
                      "text": "A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Expression.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.description",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.description-flyover",
                          "text": "A brief, natural language description of the condition that effectively communicates the intended semantics.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.description.value",
                          "text": "Natural language description of the condition",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "Expression.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.name-flyover",
                          "text": "A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.name.value",
                          "text": "name",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "Expression.language",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.language-flyover",
                          "text": "The media type of the language for the expression.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.language.value",
                          "text": "language",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.expression",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.expression-flyover",
                          "text": "An expression in the specified language that returns a value. If Expression.expression and Expression.reference are both present, the Expression.expression might just be a name pointing something within the referenced content.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.expression.value",
                          "text": "Expression in specified language",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "Expression.reference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.reference-flyover",
                          "text": "A URI that defines where the expression is found. If both a reference and an expression is found, the reference SHALL point to the same expression.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.reference.value",
                          "text": "Where the expression is found",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.ParameterDefinition",
                  "text": "Definition of a parameter to a module",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ParameterDefinition-flyover",
                      "text": "The parameters to the module. This collection specifies both the input and output parameters. Input parameters are provided by the caller as part of the $evaluate operation. Output parameters are included in the GuidanceResponse.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ParameterDefinition.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.name-flyover",
                          "text": "The name of the parameter used to allow access to the value of the parameter in evaluation contexts.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.name.value",
                          "text": "name",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.use",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.use-flyover",
                          "text": "Whether the parameter is input or output for the module.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.use.value",
                          "text": "use",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "ParameterDefinition.min",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.min-flyover",
                          "text": "The minimum number of times this parameter SHALL appear in the request or response.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.min.value",
                          "text": "Minimum cardinality",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.max",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.max-flyover",
                          "text": "The maximum number of times this element is permitted to appear in the request or response.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.max.value",
                          "text": "Maximum cardinality (a number of *)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.documentation",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.documentation-flyover",
                          "text": "A brief discussion of what the parameter is for and how it is used by the module.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.documentation.value",
                          "text": "A brief description of the parameter",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.type-flyover",
                          "text": "The type of the parameter.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "ParameterDefinition.profile",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.profile-flyover",
                          "text": "If specified, this indicates a profile that the input data must conform to, or that the output data will conform to.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.profile.value",
                          "text": "What profile the value is expected to be",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.RelatedArtifact",
                  "text": "Related artifacts for a knowledge resource",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "RelatedArtifact-display",
                      "text": "Each related artifact is either an attachment, or a reference to another knowledge resource, but not both.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "RelatedArtifact-flyover",
                      "text": "Related artifacts such as additional documentation, justification, or bibliographic references.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "RelatedArtifact.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "RelatedArtifact.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.type-flyover",
                          "text": "The type of relationship to the related artifact. The presence of both sides of a relationship type (e.g. successor and predecessor) is required to support use cases where one side of a relationship is not represented in FHIR. However, this feature SHALL NOT be used to create bi-directional resource links in FHIR instances. Specifically, following the methodology of \"new points to old\" and \"many points to one\", when using related artifact elements to describe and reference FHIR resources, the type element SHALL be drawn from the fhir-related-artifact-type ValueSet.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "RelatedArtifact.classifier",
                      "text": "Additional classifiers",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.classifier-flyover",
                          "text": "Provides additional classifiers of the related artifact.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.classifier.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RelatedArtifact.classifier.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.label",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.label-flyover",
                          "text": "A short label that can be used to reference the citation from elsewhere in the containing artifact, such as a footnote index.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.label.value",
                          "text": "Short label",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.display",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.display-flyover",
                          "text": "A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.display.value",
                          "text": "Brief description of the related artifact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.citation",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.citation-flyover",
                          "text": "A bibliographic citation for the related artifact. This text SHOULD be formatted according to an accepted citation format. Additional structured information about citations should be captured as extensions.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.citation.value",
                          "text": "Bibliographic citation for the artifact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Attachment"
                        }
                      ],
                      "linkId": "RelatedArtifact.document",
                      "text": "What document is being referenced",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.document-flyover",
                          "text": "The document being referenced, represented as an attachment. This is exclusive with the resource element.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "RelatedArtifact.resource",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.resource-flyover",
                          "text": "The related artifact, such as a library, value set, profile, or other knowledge resource. If the type is predecessor, this is a reference to the succeeding knowledge resource. If the type is successor, this is a reference to the prior knowledge resource.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.resource.value",
                          "text": "What artifact is being referenced",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "RelatedArtifact.resourceReference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.resourceReference-flyover",
                          "text": "The related artifact, if the artifact is not a canonical resource, or a resource reference to a canonical resource. If both resource and resourceReference are present, they SHOULD be consistent and reference the same resource. Although relatedArtifact is intended to support references to definitional resources, there are cases where non-definitional resources can be definitional (such as Location where the kind is mode). Related artifacts SHOULD be used to reference definitional resources, and profiles SHOULD be used to make that explicit for particular use cases.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Resource"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "RelatedArtifact.resourceReference.value",
                          "text": "What artifact, if not a conformance resource",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "RelatedArtifact.publicationStatus",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationStatus-flyover",
                          "text": "The publication status of the artifact being referred to.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.publicationStatus.value",
                          "text": "publication status",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "datetime"
                        }
                      ],
                      "linkId": "RelatedArtifact.publicationDate",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationDate-flyover",
                          "text": "The date of publication of the artifact being referred to.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.publicationDate.value",
                          "text": "Date of publication of the artifact being referred to",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.TriggerDefinition",
                  "text": "Defines an expected trigger for a module",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "TriggerDefinition-display",
                      "text": "If an event is a named-event, it means the event is completely pre-coordinated, and no other information can be specified for the event. If the event is one of the data- events, the data and condition elements specify the triggering criteria. The data element specifies the structured component, and the condition element provides additional optional refinement of that structured component. If the event is periodic, the timing element defines when the event is triggered. For both data- and periodic events, a name can be provided as a shorthand for the formal semantics provided by the other elements.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "TriggerDefinition-flyover",
                      "text": "A description of a triggering event. Triggering events can be named events, data events, or periodic, as determined by the type element.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "TriggerDefinition.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "TriggerDefinition.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "TriggerDefinition.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.type-flyover",
                          "text": "The type of triggering event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "TriggerDefinition.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.name-flyover",
                          "text": "A formal name for the event. This may be an absolute URI that identifies the event formally (e.g. from a trigger registry), or a simple relative URI that identifies the event in a local context. An event name can be provided for all event types, but is required for named events. If a name is provided for a type other than named events, it is considered to be a shorthand for the semantics described by the formal description of the event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.name.value",
                          "text": "Name or URI that identifies the event",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "TriggerDefinition.code",
                      "text": "Coded definition of the event",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.code-flyover",
                          "text": "A code that identifies the event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.code.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "TriggerDefinition.code.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "TriggerDefinition.subscriptionTopic",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.subscriptionTopic-flyover",
                          "text": "A reference to a SubscriptionTopic resource that defines the event. If this element is provided, no other information about the trigger definition may be supplied.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.subscriptionTopic.value",
                          "text": "What event",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "TriggerDefinition.timing[x]",
                      "text": "Timing of the event",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.timing[x]-flyover",
                          "text": "The timing of the event (if this is a periodic trigger).",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.timing[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs14",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Schedule"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.date",
                                  "text": "date:",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Patient"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Practitioner"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "RelatedPerson"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null.author",
                                  "text": "author:",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Schedule"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "datetime"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "datetime"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.TriggerDefinition.data",
                      "text": "Triggering data of the event (multiple \u003d \u0027and\u0027)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "TriggerDefinition.data-display",
                          "text": "This element shall be present for any data type trigger.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.data-flyover",
                          "text": "The triggering data of the event (if this is a data trigger). If more than one data is requirement is specified, then all the data requirements must be true.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.fixed[x]._null.TriggerDefinition.condition",
                      "text": "Whether the event triggers (boolean expression)",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "linkId": "TriggerDefinition.condition-display",
                          "text": "This element can be only be specified for data type triggers and provides additional semantics for the trigger. The context available within the condition is based on the type of data event. For all events, the current resource will be available as context. In addition, for modification events, the previous resource will also be available. The expression may be inlined, or may be a simple absolute URI, which is a reference to a named expression within a logic library referenced by a library element or extension within the containing resource. If the expression is a FHIR Path expression, it evaluates in the context of a resource of one of the type identified in the data requirement, and may also refer to the variable %previous for delta comparisons on events of type data-changed, data-modified, and data-deleted which will always have the same type.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.condition-flyover",
                          "text": "A boolean-valued expression that is evaluated in the context of the container of the trigger definition and returns whether or not the trigger fires.",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.UsageContext",
                  "text": "Describes the context of use for a conformance or knowledge resource",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "UsageContext-flyover",
                      "text": "Specifies clinical/business/etc. metadata that can be used to retrieve, index and/or categorize an artifact. This metadata can either be specific to the applicable population (e.g., age category, DRG) or the specific context of care (e.g., venue, care setting, provider of care).",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "UsageContext.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "UsageContext.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Coding"
                        }
                      ],
                      "linkId": "UsageContext.code",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.code-flyover",
                          "text": "A code that identifies the type of context being specified by this usage context.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.code.value",
                          "text": "Type of context being specified",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "UsageContext.value[x]",
                      "text": "Value that defines the context",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.value[x]-flyover",
                          "text": "A value that defines the context specified in this context of use. The interpretation of the value is defined by the code.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.value[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs15",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "CodeableConcept"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.coding",
                                  "text": "code:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Quantity"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.comparator",
                                  "text": "comp:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.value",
                                  "text": "value:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.units",
                                  "text": "units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.code",
                                  "text": "coded units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.system",
                                  "text": "units system:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Range"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.low",
                                  "text": "low:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.high",
                                  "text": "high:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.units",
                                  "text": "units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "PlanDefinition, ResearchStudy, InsurancePlan, HealthcareService, Group, Location, Organization"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "UsageContext.value[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.Availability",
                  "text": "Availability data for an {item}",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Availability-flyover",
                      "text": "Availability data for an {item}.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Availability.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Availability.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Availability.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.Availability.availableTime",
                      "text": "Times the {item} is available",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.availableTime-flyover",
                          "text": "Times the {item} is available.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.availableTime.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Availability.availableTime.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "Availability.availableTime.daysOfWeek",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.daysOfWeek-flyover",
                              "text": "mon | tue | wed | thu | fri | sat | sun.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.daysOfWeek.value",
                              "text": "days of week",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "boolean"
                            }
                          ],
                          "linkId": "Availability.availableTime.allDay",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.allDay-flyover",
                              "text": "Always available? i.e. 24 hour service.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.allDay.value",
                              "text": "Always available? i.e. 24 hour service",
                              "type": "boolean",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "time"
                            }
                          ],
                          "linkId": "Availability.availableTime.availableStartTime",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.availableStartTime-flyover",
                              "text": "Opening time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.availableStartTime.value",
                              "text": "Opening time of day (ignored if allDay \u003d true)",
                              "type": "time",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "time"
                            }
                          ],
                          "linkId": "Availability.availableTime.availableEndTime",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.availableEndTime-flyover",
                              "text": "Closing time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.availableEndTime.value",
                              "text": "Closing time of day (ignored if allDay \u003d true)",
                              "type": "time",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.Availability.notAvailableTime",
                      "text": "Not available during this time due to provided reason",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.notAvailableTime-flyover",
                          "text": "Not available during this time due to provided reason.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Availability.notAvailableTime.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.description",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.description-flyover",
                              "text": "Reason presented to the user explaining why time not available. The reason will generally be provided to give the textual reason for displaying when the {item} is not available, e.g. \u0027Closed public holidays\u0027 or \u0027Independence Day\u0027. In cases such as this, the `during` might not be included and local knowledge would be required in such cases (as don\u0027t desire to keep updating when the holiday occurs each year).\n\ne.g.2: \u0027Closed for maintenance over the summer\u0027 for this example you would want to include the `during` period, unless this was a university hospital and the \"summer\" period was well known, but would recommend its inclusion anyway.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.description.value",
                              "text": "Reason presented to the user explaining why time not available",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Period"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.during",
                          "text": "Service not available during this period",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.during-flyover",
                              "text": "Service not available during this period.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.during.low",
                              "text": "start:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Availability.notAvailableTime.during.end",
                              "text": "end:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.ExtendedContactDetail",
                  "text": "Contact information",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "ExtendedContactDetail-display",
                      "text": "This datatype may be sparsely populated, i.e. only contain a purpose and phone number or address, but other cases could be completed filled out.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ExtendedContactDetail-flyover",
                      "text": "Specifies contact information for a specific purpose over a period of time, might be handled/monitored by a specific named person or organization.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ExtendedContactDetail.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.purpose",
                      "text": "The type of contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.purpose-flyover",
                          "text": "The purpose/type of contact. If no purpose is defined, then these contact details may be used for any purpose.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.purpose.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ExtendedContactDetail.purpose.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Name"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.name",
                      "text": "Name of an individual to contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.name-flyover",
                          "text": "The name of an individual to contact, some types of contact detail are usually blank. If there is no named individual, the telecom/address information is not generally monitored by a specific individual.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.family",
                          "text": "family:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.given",
                          "text": "given:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "ContactPoint"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.telecom",
                      "text": "Contact details (e.g.phone/fax/url)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.telecom-flyover",
                          "text": "The contact details application for the purpose defined.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.system",
                          "text": "type:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Address"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.address",
                      "text": "Address for the contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.address-flyover",
                          "text": "Address for the contact. More than 1 address would be for different purposes, and thus should be entered as a different entry,.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.line",
                          "text": "line:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.city",
                          "text": "city:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.state",
                          "text": "state:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.postalCode",
                          "text": "post code:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.country",
                          "text": "country:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.organization",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.organization-flyover",
                          "text": "This contact detail is handled/monitored by a specific organization. If the name is provided in the contact, then it is referring to the named individual within this organization.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Organization"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.organization.value",
                          "text": "This contact detail is handled/monitored by a specific organization",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Period"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.period",
                      "text": "Period that this contact was valid for usage",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.period-flyover",
                          "text": "Period that this contact was valid for usage. If the details have multiple periods, then enter in a new ExtendedContact with the new period.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.period.low",
                          "text": "start:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.period.end",
                          "text": "end:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null.Dosage",
                  "text": "How the medication is/was taken or should be taken",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Dosage-flyover",
                      "text": "Indicates how the medication is/was taken or should be taken by the patient.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Dosage.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "linkId": "Dosage.modifierExtension",
                      "text": "Extensions that cannot be ignored even if unrecognized",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.modifierExtension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element\u0027s descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "Dosage.sequence",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.sequence-flyover",
                          "text": "Indicates the order in which the dosage instructions should be applied or interpreted.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.sequence.value",
                          "text": "The order of the dosage instructions",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.text",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.text-flyover",
                          "text": "Free text dosage instructions e.g. SIG.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.text.value",
                          "text": "Free text dosage instructions e.g. SIG",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.additionalInstruction",
                      "text": "Supplemental instruction or warnings to the patient - e.g. \"with meals\", \"may cause drowsiness\"",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.additionalInstruction-flyover",
                          "text": "Supplemental instructions to the patient on how to take the medication  (e.g. \"with meals\" or\"take half to one hour before food\") or warnings for the patient about the medication (e.g. \"may cause drowsiness\" or \"avoid exposure of skin to direct sunlight or sunlamps\"). Information about administration or preparation of the medication (e.g. \"infuse as rapidly as possibly via intraperitoneal port\" or take \"immediately following drug x\") should be populated in dosage.text.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.additionalInstruction.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.additionalInstruction.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.patientInstruction",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.patientInstruction-flyover",
                          "text": "Instructions in terms that are understood by the patient or consumer.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.patientInstruction.value",
                          "text": "Patient or consumer oriented instructions",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Schedule"
                        }
                      ],
                      "linkId": "Dosage.timing",
                      "text": "When medication should be administered",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.timing-flyover",
                          "text": "When medication should be administered. This attribute might not always be populated while the Dosage.text is expected to be populated.  If both are populated, then the Dosage.text should reflect the content of the Dosage.timing.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.timing.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.timing.date",
                          "text": "date:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Patient"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Practitioner"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "RelatedPerson"
                            }
                          ],
                          "linkId": "Dosage.timing.author",
                          "text": "author:",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "boolean"
                        }
                      ],
                      "linkId": "Dosage.asNeeded",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.asNeeded-flyover",
                          "text": "Indicates whether the Medication is only taken when needed within a specific dosing schedule (Boolean option). Can express \"as needed\" without a reason by setting the Boolean \u003d True.  In this case the CodeableConcept is not populated.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.asNeeded.value",
                          "text": "Take \"as needed\"",
                          "type": "boolean",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.asNeededFor",
                      "text": "Take \"as needed\" (for x)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.asNeededFor-flyover",
                          "text": "Indicates whether the Medication is only taken based on a precondition for taking the Medication (CodeableConcept). Can express \"as needed\" with a reason by including the CodeableConcept.  In this case the Boolean is assumed to be False, then the dose is given according to the schedule and is not \"prn\" or \"as needed\".",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.asNeededFor.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.asNeededFor.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.site",
                      "text": "Body site to administer to",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.site-flyover",
                          "text": "Body site to administer to. If the use case requires attributes from the BodySite resource (e.g. to identify and track separately) then use the standard extension [http://hl7.org/fhir/StructureDefinition/bodySite](http://hl7.org/fhir/extensions/StructureDefinition-bodySite.html).  May be a summary code, or a reference to a very precise definition of the location, or both.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.site.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.site.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.route",
                      "text": "How drug should enter body",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.route-flyover",
                          "text": "How drug should enter body.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.route.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.route.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.method",
                      "text": "Technique for administering medication",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.method-flyover",
                          "text": "Technique for administering medication. Terminologies used often pre-coordinate this term with the route and or form of administration.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.method.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.method.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.fixed[x]._null.Dosage.doseAndRate",
                      "text": "Amount of medication administered, to be administered or typical amount to be administered",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.doseAndRate-flyover",
                          "text": "Depending on the resource,this is the amount of medication administered, to  be administered or typical amount to be administered.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Dosage.doseAndRate.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.type",
                          "text": "The kind of dose or rate specified",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.type-flyover",
                              "text": "The kind of dose or rate specified, for example, ordered or calculated.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.type.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.type.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.dose[x]",
                          "text": "Amount of medication per dose",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.dose[x]-flyover",
                              "text": "Amount of medication per dose. Note that this specifies the quantity of the specified medication, not the quantity for each active ingredient(s). Each ingredient amount can be communicated in the Medication resource. For example, if one wants to communicate that a tablet was 375 mg, where the dose was one tablet, you can use the Medication resource to document that the tablet was comprised of 375 mg of drug XYZ. Alternatively if the dose was 375 mg, then you may only need to use the Medication resource to indicate this was a tablet. If the example were an IV such as dopamine and you wanted to communicate that 400mg of dopamine was mixed in 500 ml of some IV solution, then this would all be communicated in the Medication resource. If the administration is not intended to be instantaneous (rate is present or timing has a duration), this can be specified to convey the total amount to be administered over the period of time as indicated by the schedule e.g. 500 ml in dose, with timing used to convey that this should be done over 4 hours.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.dose[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs16",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Range"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.dose[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.low",
                                      "text": "low:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.high",
                                      "text": "high:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.dose[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.rate[x]",
                          "text": "Amount of medication per unit of time",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.rate[x]-flyover",
                              "text": "Amount of medication per unit of time. It is possible to supply both a rate and a doseQuantity to provide full details about how the medication is to be administered and supplied. If the rate is intended to change over time, depending on local rules/regulations, each change should be captured as a new version of the MedicationRequest with an updated rate, or captured with a new MedicationRequest with the new rate.\r\rIt is possible to specify a rate over time (for example, 100 ml/hour) using either the rateRatio and rateQuantity.  The rateQuantity approach requires systems to have the capability to parse UCUM grammar where ml/hour is included rather than a specific ratio where the time is specified as the denominator.  Where a rate such as 500ml over 2 hours is specified, the use of rateRatio may be more semantically correct than specifying using a rateQuantity of 250 mg/hour.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.rate[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs17",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Ratio"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.numerator",
                                      "text": "numerator:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.denominator",
                                      "text": "denominator:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Range"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.low",
                                      "text": "low:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.high",
                                      "text": "high:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Ratio"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerPeriod",
                      "text": "Upper limit on medication per unit of time",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerPeriod-flyover",
                          "text": "Upper limit on medication per unit of time. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example \"2 tablets every 4 hours to a maximum of 8/day\".",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.numerator",
                          "text": "numerator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.denominator",
                          "text": "denominator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerAdministration",
                      "text": "Upper limit on medication per administration",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerAdministration-flyover",
                          "text": "Upper limit on medication per administration. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example, a body surface area related dose with a maximum amount, such as 1.5 mg/m2 (maximum 2 mg) IV over 5 – 10 minutes would have doseQuantity of 1.5 mg/m2 and maxDosePerAdministration of 2 mg.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerLifetime",
                      "text": "Upper limit on medication per lifetime of the patient",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerLifetime-flyover",
                          "text": "Upper limit on medication per lifetime of the patient.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.fixed[x]._null",
                  "type": "group"
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            }
          ],
          "linkId": "ElementDefinition.pattern[x]",
          "text": "Value must have at least these property values",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.pattern[x]-flyover",
              "text": "Specifies a value that each occurrence of the element in the instance SHALL follow - that is, any value in the pattern must be found in the instance, if the element has a value. Other additional values may be found too. This is effectively constraint by example.  \n\nWhen pattern[x] is used to constrain a primitive, it means that the value provided in the pattern[x] must match the instance value exactly.\n\nWhen an element within a pattern[x] is used to constrain an array, it means that each element provided in the pattern[x] must (recursively) match at least one element from the instance array.\n\nWhen pattern[x] is used to constrain a complex object, it means that each property in the pattern must be present in the complex object, and its value must recursively match -- i.e.,\n\n1. If primitive: it must match exactly the pattern value\n2. If a complex object: it must match (recursively) the pattern value\n3. If an array: it must match (recursively) the pattern value\n\nIf a pattern[x] is declared on a repeating element, the pattern applies to all repetitions.  If the desire is for a pattern to apply to only one element or a subset of elements, slicing must be used. See [Examples of Patterns](elementdefinition-examples.html#pattern-examples) for examples of pattern usage and the effect it will have. Mostly used for fixing values of CodeableConcept. In general, pattern[x] is not intended for use with primitive types, where is has the same meaning as fixed[x].",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.pattern[x]._type",
              "text": "type",
              "type": "coding",
              "required": false,
              "repeats": false,
              "answerConstraint": "optionsOnly",
              "answerValueSet": "#vs18",
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "binary"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "boolean"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "boolean",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "code"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "pattern[x]",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "decimal"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "instant"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.integer64",
                  "text": "Primitive Type integer64",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "integer64-display",
                      "text": "Typically this is used for record counters (e.g. database keys)",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "integer64-flyover",
                      "text": "A very large whole number",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "integer64.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.id-flyover",
                          "text": "unique id for the element within a resource (for internal references)",
                          "type": "display"
                        },
                        {
                          "linkId": "integer64.id.value",
                          "text": "xml:id (or equivalent in JSON)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "integer64.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.pattern[x]._null.integer64.value",
                      "text": "Primitive value for integer64",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.value-flyover",
                          "text": "The actual value",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "time"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "time",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Address"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.line",
                      "text": "line:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.city",
                      "text": "city:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.state",
                      "text": "state:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.postalCode",
                      "text": "post code:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.country",
                      "text": "country:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.use",
                      "text": "use:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Annotation"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Attachment"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "CodeableConcept"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.coding",
                      "text": "code:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.CodeableReference",
                  "text": "Reference to a resource or a concept",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "CodeableReference-flyover",
                      "text": "A reference to a resource (by instance), or instead, a reference to a concept defined in a terminology or ontology (by class).",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "CodeableReference.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "CodeableReference.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "CodeableReference.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "CodeableReference.concept",
                      "text": "Reference to a concept (by class)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.concept-flyover",
                          "text": "A reference to a concept - e.g. the information is identified by its general class to the degree of precision found in the terminology.",
                          "type": "display"
                        },
                        {
                          "linkId": "CodeableReference.concept.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "CodeableReference.concept.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "CodeableReference.reference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference.reference-flyover",
                          "text": "A reference to a resource the provides exact details about the information being referenced.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "CodeableReference.reference.value",
                          "text": "Reference to a resource (by instance)",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Coding"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "ContactPoint"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "type:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.use",
                      "text": "use:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Name"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.family",
                      "text": "family:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.given",
                      "text": "given:",
                      "type": "string",
                      "required": false,
                      "repeats": true
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Identifier"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.label",
                      "text": "label:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Period"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.low",
                      "text": "start:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.end",
                      "text": "end:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Range"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.low",
                      "text": "low:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.high",
                      "text": "high:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Ratio"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.numerator",
                      "text": "numerator:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.denominator",
                      "text": "denominator:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.RatioRange",
                  "text": "Range of ratio values",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "RatioRange-display",
                      "text": "The stated low and high value are assumed to have arbitrarily high precision when it comes to determining which values are in the range. I.e. 1.99 is not in the range 2 -\u003e 3.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "RatioRange-flyover",
                      "text": "A range of ratios expressed as a low and high numerator and a denominator.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RatioRange.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "RatioRange.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.lowNumerator",
                      "text": "Low Numerator limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.lowNumerator-flyover",
                          "text": "The value of the low limit numerator. If the low element is missing, the low boundary is not known.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.lowNumerator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.highNumerator",
                      "text": "High Numerator limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.highNumerator-flyover",
                          "text": "The value of the high limit numerator. If the high element is missing, the high boundary is not known.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.highNumerator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.highNumerator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.highNumerator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "RatioRange.denominator",
                      "text": "Denominator value",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange.denominator-flyover",
                          "text": "The value of the denominator.",
                          "type": "display"
                        },
                        {
                          "linkId": "RatioRange.denominator.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RatioRange.denominator.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "RatioRange.denominator.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Reference"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                          "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                        }
                      ],
                      "linkId": "ElementDefinition.pattern[x]._null.value",
                      "type": "reference",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "SampledData"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group"
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Schedule"
                    }
                  ],
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.text",
                      "text": "text:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.date",
                      "text": "date:",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "Patient"
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "Practitioner"
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                          "valueCode": "RelatedPerson"
                        }
                      ],
                      "linkId": "ElementDefinition.pattern[x]._null.author",
                      "text": "author:",
                      "type": "reference",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.ContactDetail",
                  "text": "Contact information",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ContactDetail-flyover",
                      "text": "Specifies contact information for a person or organization.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ContactDetail.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ContactDetail.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ContactDetail.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.name-flyover",
                          "text": "The name of an individual to contact. If there is no named individual, the telecom information is for the organization as a whole.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.name.value",
                          "text": "Name of an individual to contact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "ContactPoint"
                        }
                      ],
                      "linkId": "ContactDetail.telecom",
                      "text": "Contact details for individual or organization",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail.telecom-flyover",
                          "text": "The contact details for the individual (if a name was provided) or the organization.",
                          "type": "display"
                        },
                        {
                          "linkId": "ContactDetail.telecom.system",
                          "text": "type:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ContactDetail.telecom.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ContactDetail.telecom.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.DataRequirement",
                  "text": "Describes a required data item",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "DataRequirement-flyover",
                      "text": "Describes a required data item for evaluation in terms of the type of data, and optional code or date-based filters of the data.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "DataRequirement.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "DataRequirement.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "DataRequirement.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.type-flyover",
                          "text": "The type of the required data, specified as the type name of a resource. For profiles, this value is set to the type of the base resource of the profile.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "DataRequirement.profile",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.profile-flyover",
                          "text": "The profile of the required data, specified as the uri of the profile definition.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.profile.value",
                          "text": "The profile of the required data",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "DataRequirement.subject[x]",
                      "text": "E.g. Patient, Practitioner, RelatedPerson, Organization, Location, Device",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.subject[x]-flyover",
                          "text": "The intended subjects of the data requirement. If this element is not provided, a Patient subject is assumed. The subject of a data requirement is critical, as the data being specified is determined with respect to a particular subject. This corresponds roughly to the notion of a Compartment in that it limits what data is available based on its relationship to the subject. In CQL, this corresponds to the context declaration.",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.subject[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs19",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "CodeableConcept"
                                }
                              ],
                              "linkId": "DataRequirement.subject[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "DataRequirement.subject[x]._null.coding",
                                  "text": "code:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "DataRequirement.subject[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "DataRequirement.subject[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Group"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "DataRequirement.subject[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "DataRequirement.mustSupport",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.mustSupport-flyover",
                          "text": "Indicates that specific elements of the type are referenced by the knowledge module and must be supported by the consumer in order to obtain an effective evaluation. This does not mean that a value is required for this element, only that the consuming system must understand the element and be able to provide values for it if they are available. \n\nThe value of mustSupport SHALL be a FHIRPath resolvable on the type of the DataRequirement. The path SHALL consist only of identifiers, constant indexers, and .resolve() (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details).",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.mustSupport.value",
                          "text": "Indicates specific structure elements that are referenced by the knowledge module",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.DataRequirement.codeFilter",
                      "text": "What codes are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter-flyover",
                          "text": "Code filters specify additional constraints on the data, specifying the value set of interest for a particular element of the data. Each code filter defines an additional constraint on the data, i.e. code filters are AND\u0027ed, not OR\u0027ed.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.codeFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.path-flyover",
                              "text": "The code-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type code, Coding, or CodeableConcept. The path attribute contains a [Simple FHIRPath Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.path.value",
                              "text": "A code-valued attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.searchParam-flyover",
                              "text": "A token parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type code, Coding, or CodeableConcept.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.searchParam.value",
                              "text": "A coded (token) parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.valueSet",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.valueSet-flyover",
                              "text": "The valueset for the code filter. The valueSet and code elements are additive. If valueSet is specified, the filter will return only those data items for which the value of the code-valued element specified in the path is a member of the specified valueset.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.valueSet.value",
                              "text": "ValueSet for the filter",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Coding"
                            }
                          ],
                          "linkId": "DataRequirement.codeFilter.code",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.code-flyover",
                              "text": "The codes for the code filter. If values are given, the filter will return only those data items for which the code-valued attribute specified by the path has a value that is one of the specified codes. If codes are specified in addition to a value set, the filter returns items matching a code in the value set or one of the specified codes.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.code.value",
                              "text": "What code is expected",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.DataRequirement.dateFilter",
                      "text": "What dates/date ranges are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter-flyover",
                          "text": "Date filters specify additional constraints on the data in terms of the applicable date range for specific elements. Each date filter specifies an additional constraint on the data, i.e. date filters are AND\u0027ed, not OR\u0027ed.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.dateFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.path-flyover",
                              "text": "The date-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type date, dateTime, Period, Schedule, or Timing. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.path.value",
                              "text": "A date-valued attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.searchParam-flyover",
                              "text": "A date parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type date, dateTime, Period, Schedule, or Timing.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.searchParam.value",
                              "text": "A date valued parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "DataRequirement.dateFilter.value[x]",
                          "text": "The value of the filter, as a Period, DateTime, or Duration value",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.value[x]-flyover",
                              "text": "The value of the filter. If period is specified, the filter will return only those data items that fall within the bounds determined by the Period, inclusive of the period boundaries. If dateTime is specified, the filter will return only those data items that are equal to the specified dateTime. If a Duration is specified, the filter will return only those data items that fall within Duration before now.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.value[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs20",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Period"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.low",
                                      "text": "start:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.end",
                                      "text": "end:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.dateFilter.value[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.DataRequirement.valueFilter",
                      "text": "What values are expected",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter-flyover",
                          "text": "Value filters specify additional constraints on the data for elements other than code-valued or date-valued. Each value filter specifies an additional constraint on the data (i.e. valueFilters are AND\u0027ed, not OR\u0027ed).",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.valueFilter.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.path",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.path-flyover",
                              "text": "The attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of a type that is comparable to the valueFilter.value[x] element for the filter. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.path.value",
                              "text": "An attribute to filter on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.searchParam",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.searchParam-flyover",
                              "text": "A search parameter defined on the specified type of the DataRequirement, and which searches on elements of a type compatible with the type of the valueFilter.value[x] for the filter.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.searchParam.value",
                              "text": "A parameter to search on",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.comparator",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.comparator-flyover",
                              "text": "The comparator to be used to determine whether the value is matching.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.comparator.value",
                              "text": "comparator",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "DataRequirement.valueFilter.value[x]",
                          "text": "The value of the filter, as a Period, DateTime, or Duration value",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.value[x]-flyover",
                              "text": "The value of the filter.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.value[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs21",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Period"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.low",
                                      "text": "start:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.end",
                                      "text": "end:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "DataRequirement.valueFilter.value[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "DataRequirement.limit",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.limit-flyover",
                          "text": "Specifies a maximum number of results that are required (uses the _count search parameter). This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\".",
                          "type": "display"
                        },
                        {
                          "linkId": "DataRequirement.limit.value",
                          "text": "Number of results",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.DataRequirement.sort",
                      "text": "Order of the results",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "DataRequirement.sort-display",
                          "text": "This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\". When multiple sorts are specified, they are applied in the order they appear in the resource.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement.sort-flyover",
                          "text": "Specifies the order of the results to be returned.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.sort.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.sort.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.sort.path",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.path-flyover",
                              "text": "The attribute of the sort. The specified path must be resolvable from the type of the required data. The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements. Note that the index must be an integer constant.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.path.value",
                              "text": "The name of the attribute to perform the sort",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "DataRequirement.sort.direction",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort.direction-flyover",
                              "text": "The direction of the sort, ascending or descending.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.sort.direction.value",
                              "text": "direction",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.Expression",
                  "text": "An expression that can be used to generate a value",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Expression-flyover",
                      "text": "A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Expression.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.description",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.description-flyover",
                          "text": "A brief, natural language description of the condition that effectively communicates the intended semantics.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.description.value",
                          "text": "Natural language description of the condition",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "Expression.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.name-flyover",
                          "text": "A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.name.value",
                          "text": "name",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "Expression.language",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.language-flyover",
                          "text": "The media type of the language for the expression.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.language.value",
                          "text": "language",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Expression.expression",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.expression-flyover",
                          "text": "An expression in the specified language that returns a value. If Expression.expression and Expression.reference are both present, the Expression.expression might just be a name pointing something within the referenced content.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.expression.value",
                          "text": "Expression in specified language",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "Expression.reference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression.reference-flyover",
                          "text": "A URI that defines where the expression is found. If both a reference and an expression is found, the reference SHALL point to the same expression.",
                          "type": "display"
                        },
                        {
                          "linkId": "Expression.reference.value",
                          "text": "Where the expression is found",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.ParameterDefinition",
                  "text": "Definition of a parameter to a module",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ParameterDefinition-flyover",
                      "text": "The parameters to the module. This collection specifies both the input and output parameters. Input parameters are provided by the caller as part of the $evaluate operation. Output parameters are included in the GuidanceResponse.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ParameterDefinition.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.name-flyover",
                          "text": "The name of the parameter used to allow access to the value of the parameter in evaluation contexts.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.name.value",
                          "text": "name",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.use",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.use-flyover",
                          "text": "Whether the parameter is input or output for the module.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.use.value",
                          "text": "use",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "ParameterDefinition.min",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.min-flyover",
                          "text": "The minimum number of times this parameter SHALL appear in the request or response.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.min.value",
                          "text": "Minimum cardinality",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.max",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.max-flyover",
                          "text": "The maximum number of times this element is permitted to appear in the request or response.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.max.value",
                          "text": "Maximum cardinality (a number of *)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ParameterDefinition.documentation",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.documentation-flyover",
                          "text": "A brief discussion of what the parameter is for and how it is used by the module.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.documentation.value",
                          "text": "A brief description of the parameter",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ParameterDefinition.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.type-flyover",
                          "text": "The type of the parameter.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "ParameterDefinition.profile",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition.profile-flyover",
                          "text": "If specified, this indicates a profile that the input data must conform to, or that the output data will conform to.",
                          "type": "display"
                        },
                        {
                          "linkId": "ParameterDefinition.profile.value",
                          "text": "What profile the value is expected to be",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.RelatedArtifact",
                  "text": "Related artifacts for a knowledge resource",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "RelatedArtifact-display",
                      "text": "Each related artifact is either an attachment, or a reference to another knowledge resource, but not both.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "RelatedArtifact-flyover",
                      "text": "Related artifacts such as additional documentation, justification, or bibliographic references.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "RelatedArtifact.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "RelatedArtifact.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.type-flyover",
                          "text": "The type of relationship to the related artifact. The presence of both sides of a relationship type (e.g. successor and predecessor) is required to support use cases where one side of a relationship is not represented in FHIR. However, this feature SHALL NOT be used to create bi-directional resource links in FHIR instances. Specifically, following the methodology of \"new points to old\" and \"many points to one\", when using related artifact elements to describe and reference FHIR resources, the type element SHALL be drawn from the fhir-related-artifact-type ValueSet.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "RelatedArtifact.classifier",
                      "text": "Additional classifiers",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.classifier-flyover",
                          "text": "Provides additional classifiers of the related artifact.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.classifier.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "RelatedArtifact.classifier.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.label",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.label-flyover",
                          "text": "A short label that can be used to reference the citation from elsewhere in the containing artifact, such as a footnote index.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.label.value",
                          "text": "Short label",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.display",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.display-flyover",
                          "text": "A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.display.value",
                          "text": "Brief description of the related artifact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "RelatedArtifact.citation",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.citation-flyover",
                          "text": "A bibliographic citation for the related artifact. This text SHOULD be formatted according to an accepted citation format. Additional structured information about citations should be captured as extensions.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.citation.value",
                          "text": "Bibliographic citation for the artifact",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Attachment"
                        }
                      ],
                      "linkId": "RelatedArtifact.document",
                      "text": "What document is being referenced",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.document-flyover",
                          "text": "The document being referenced, represented as an attachment. This is exclusive with the resource element.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "RelatedArtifact.resource",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.resource-flyover",
                          "text": "The related artifact, such as a library, value set, profile, or other knowledge resource. If the type is predecessor, this is a reference to the succeeding knowledge resource. If the type is successor, this is a reference to the prior knowledge resource.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.resource.value",
                          "text": "What artifact is being referenced",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "RelatedArtifact.resourceReference",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.resourceReference-flyover",
                          "text": "The related artifact, if the artifact is not a canonical resource, or a resource reference to a canonical resource. If both resource and resourceReference are present, they SHOULD be consistent and reference the same resource. Although relatedArtifact is intended to support references to definitional resources, there are cases where non-definitional resources can be definitional (such as Location where the kind is mode). Related artifacts SHOULD be used to reference definitional resources, and profiles SHOULD be used to make that explicit for particular use cases.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Resource"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "RelatedArtifact.resourceReference.value",
                          "text": "What artifact, if not a conformance resource",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "RelatedArtifact.publicationStatus",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationStatus-flyover",
                          "text": "The publication status of the artifact being referred to.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.publicationStatus.value",
                          "text": "publication status",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "datetime"
                        }
                      ],
                      "linkId": "RelatedArtifact.publicationDate",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationDate-flyover",
                          "text": "The date of publication of the artifact being referred to.",
                          "type": "display"
                        },
                        {
                          "linkId": "RelatedArtifact.publicationDate.value",
                          "text": "Date of publication of the artifact being referred to",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.TriggerDefinition",
                  "text": "Defines an expected trigger for a module",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "TriggerDefinition-display",
                      "text": "If an event is a named-event, it means the event is completely pre-coordinated, and no other information can be specified for the event. If the event is one of the data- events, the data and condition elements specify the triggering criteria. The data element specifies the structured component, and the condition element provides additional optional refinement of that structured component. If the event is periodic, the timing element defines when the event is triggered. For both data- and periodic events, a name can be provided as a shorthand for the formal semantics provided by the other elements.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "TriggerDefinition-flyover",
                      "text": "A description of a triggering event. Triggering events can be named events, data events, or periodic, as determined by the type element.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "TriggerDefinition.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "TriggerDefinition.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "TriggerDefinition.type",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.type-flyover",
                          "text": "The type of triggering event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.type.value",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOrType"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "TriggerDefinition.name",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.name-flyover",
                          "text": "A formal name for the event. This may be an absolute URI that identifies the event formally (e.g. from a trigger registry), or a simple relative URI that identifies the event in a local context. An event name can be provided for all event types, but is required for named events. If a name is provided for a type other than named events, it is considered to be a shorthand for the semantics described by the formal description of the event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.name.value",
                          "text": "Name or URI that identifies the event",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "TriggerDefinition.code",
                      "text": "Coded definition of the event",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.code-flyover",
                          "text": "A code that identifies the event.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.code.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "TriggerDefinition.code.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "TriggerDefinition.subscriptionTopic",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.subscriptionTopic-flyover",
                          "text": "A reference to a SubscriptionTopic resource that defines the event. If this element is provided, no other information about the trigger definition may be supplied.",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.subscriptionTopic.value",
                          "text": "What event",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "TriggerDefinition.timing[x]",
                      "text": "Timing of the event",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.timing[x]-flyover",
                          "text": "The timing of the event (if this is a periodic trigger).",
                          "type": "display"
                        },
                        {
                          "linkId": "TriggerDefinition.timing[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs22",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Schedule"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.date",
                                  "text": "date:",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Patient"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Practitioner"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "RelatedPerson"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null.author",
                                  "text": "author:",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "Schedule"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "datetime"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "datetime"
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "TriggerDefinition.timing[x]._null.value",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.TriggerDefinition.data",
                      "text": "Triggering data of the event (multiple \u003d \u0027and\u0027)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "TriggerDefinition.data-display",
                          "text": "This element shall be present for any data type trigger.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.data-flyover",
                          "text": "The triggering data of the event (if this is a data trigger). If more than one data is requirement is specified, then all the data requirements must be true.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.pattern[x]._null.TriggerDefinition.condition",
                      "text": "Whether the event triggers (boolean expression)",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "linkId": "TriggerDefinition.condition-display",
                          "text": "This element can be only be specified for data type triggers and provides additional semantics for the trigger. The context available within the condition is based on the type of data event. For all events, the current resource will be available as context. In addition, for modification events, the previous resource will also be available. The expression may be inlined, or may be a simple absolute URI, which is a reference to a named expression within a logic library referenced by a library element or extension within the containing resource. If the expression is a FHIR Path expression, it evaluates in the context of a resource of one of the type identified in the data requirement, and may also refer to the variable %previous for delta comparisons on events of type data-changed, data-modified, and data-deleted which will always have the same type.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition.condition-flyover",
                          "text": "A boolean-valued expression that is evaluated in the context of the container of the trigger definition and returns whether or not the trigger fires.",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.UsageContext",
                  "text": "Describes the context of use for a conformance or knowledge resource",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "UsageContext-flyover",
                      "text": "Specifies clinical/business/etc. metadata that can be used to retrieve, index and/or categorize an artifact. This metadata can either be specific to the applicable population (e.g., age category, DRG) or the specific context of care (e.g., venue, care setting, provider of care).",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "UsageContext.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "UsageContext.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Coding"
                        }
                      ],
                      "linkId": "UsageContext.code",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.code-flyover",
                          "text": "A code that identifies the type of context being specified by this usage context.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.code.value",
                          "text": "Type of context being specified",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "UsageContext.value[x]",
                      "text": "Value that defines the context",
                      "type": "group",
                      "required": true,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext.value[x]-flyover",
                          "text": "A value that defines the context specified in this context of use. The interpretation of the value is defined by the code.",
                          "type": "display"
                        },
                        {
                          "linkId": "UsageContext.value[x]._type",
                          "text": "type",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly",
                          "answerValueSet": "#vs23",
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "CodeableConcept"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.coding",
                                  "text": "code:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Quantity"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.comparator",
                                  "text": "comp:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.value",
                                  "text": "value:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.units",
                                  "text": "units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.code",
                                  "text": "coded units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.system",
                                  "text": "units system:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Range"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "linkId": "UsageContext.value[x]._null.low",
                                  "text": "low:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.high",
                                  "text": "high:",
                                  "type": "decimal",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "UsageContext.value[x]._null.units",
                                  "text": "units:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Reference"
                                }
                              ],
                              "linkId": "UsageContext.value[x]._null",
                              "type": "group",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                      "valueCode": "PlanDefinition, ResearchStudy, InsurancePlan, HealthcareService, Group, Location, Organization"
                                    },
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                      "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                    }
                                  ],
                                  "linkId": "UsageContext.value[x]._null.value",
                                  "type": "reference",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.Availability",
                  "text": "Availability data for an {item}",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Availability-flyover",
                      "text": "Availability data for an {item}.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Availability.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Availability.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Availability.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.Availability.availableTime",
                      "text": "Times the {item} is available",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.availableTime-flyover",
                          "text": "Times the {item} is available.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.availableTime.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Availability.availableTime.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "Availability.availableTime.daysOfWeek",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.daysOfWeek-flyover",
                              "text": "mon | tue | wed | thu | fri | sat | sun.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.daysOfWeek.value",
                              "text": "days of week",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "boolean"
                            }
                          ],
                          "linkId": "Availability.availableTime.allDay",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.allDay-flyover",
                              "text": "Always available? i.e. 24 hour service.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.allDay.value",
                              "text": "Always available? i.e. 24 hour service",
                              "type": "boolean",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "time"
                            }
                          ],
                          "linkId": "Availability.availableTime.availableStartTime",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.availableStartTime-flyover",
                              "text": "Opening time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.availableStartTime.value",
                              "text": "Opening time of day (ignored if allDay \u003d true)",
                              "type": "time",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "time"
                            }
                          ],
                          "linkId": "Availability.availableTime.availableEndTime",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime.availableEndTime-flyover",
                              "text": "Closing time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.availableTime.availableEndTime.value",
                              "text": "Closing time of day (ignored if allDay \u003d true)",
                              "type": "time",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.Availability.notAvailableTime",
                      "text": "Not available during this time due to provided reason",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability.notAvailableTime-flyover",
                          "text": "Not available during this time due to provided reason.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Availability.notAvailableTime.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.description",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.description-flyover",
                              "text": "Reason presented to the user explaining why time not available. The reason will generally be provided to give the textual reason for displaying when the {item} is not available, e.g. \u0027Closed public holidays\u0027 or \u0027Independence Day\u0027. In cases such as this, the `during` might not be included and local knowledge would be required in such cases (as don\u0027t desire to keep updating when the holiday occurs each year).\n\ne.g.2: \u0027Closed for maintenance over the summer\u0027 for this example you would want to include the `during` period, unless this was a university hospital and the \"summer\" period was well known, but would recommend its inclusion anyway.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.description.value",
                              "text": "Reason presented to the user explaining why time not available",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Period"
                            }
                          ],
                          "linkId": "Availability.notAvailableTime.during",
                          "text": "Service not available during this period",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.during-flyover",
                              "text": "Service not available during this period.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.notAvailableTime.during.low",
                              "text": "start:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Availability.notAvailableTime.during.end",
                              "text": "end:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.ExtendedContactDetail",
                  "text": "Contact information",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "ExtendedContactDetail-display",
                      "text": "This datatype may be sparsely populated, i.e. only contain a purpose and phone number or address, but other cases could be completed filled out.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ExtendedContactDetail-flyover",
                      "text": "Specifies contact information for a specific purpose over a period of time, might be handled/monitored by a specific named person or organization.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ExtendedContactDetail.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.purpose",
                      "text": "The type of contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.purpose-flyover",
                          "text": "The purpose/type of contact. If no purpose is defined, then these contact details may be used for any purpose.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.purpose.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ExtendedContactDetail.purpose.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Name"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.name",
                      "text": "Name of an individual to contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.name-flyover",
                          "text": "The name of an individual to contact, some types of contact detail are usually blank. If there is no named individual, the telecom/address information is not generally monitored by a specific individual.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.family",
                          "text": "family:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ExtendedContactDetail.name.given",
                          "text": "given:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "ContactPoint"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.telecom",
                      "text": "Contact details (e.g.phone/fax/url)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.telecom-flyover",
                          "text": "The contact details application for the purpose defined.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.system",
                          "text": "type:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.telecom.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Address"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.address",
                      "text": "Address for the contact",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.address-flyover",
                          "text": "Address for the contact. More than 1 address would be for different purposes, and thus should be entered as a different entry,.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.line",
                          "text": "line:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.city",
                          "text": "city:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.state",
                          "text": "state:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.postalCode",
                          "text": "post code:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.country",
                          "text": "country:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.address.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.organization",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.organization-flyover",
                          "text": "This contact detail is handled/monitored by a specific organization. If the name is provided in the contact, then it is referring to the named individual within this organization.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Organization"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.organization.value",
                          "text": "This contact detail is handled/monitored by a specific organization",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Period"
                        }
                      ],
                      "linkId": "ExtendedContactDetail.period",
                      "text": "Period that this contact was valid for usage",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail.period-flyover",
                          "text": "Period that this contact was valid for usage. If the details have multiple periods, then enter in a new ExtendedContact with the new period.",
                          "type": "display"
                        },
                        {
                          "linkId": "ExtendedContactDetail.period.low",
                          "text": "start:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ExtendedContactDetail.period.end",
                          "text": "end:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null.Dosage",
                  "text": "How the medication is/was taken or should be taken",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "Dosage-flyover",
                      "text": "Indicates how the medication is/was taken or should be taken by the patient.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.id-flyover",
                          "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.id.value",
                          "text": "Unique id for inter-element referencing",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "Dosage.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "linkId": "Dosage.modifierExtension",
                      "text": "Extensions that cannot be ignored even if unrecognized",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.modifierExtension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element\u0027s descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "Dosage.sequence",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.sequence-flyover",
                          "text": "Indicates the order in which the dosage instructions should be applied or interpreted.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.sequence.value",
                          "text": "The order of the dosage instructions",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.text",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.text-flyover",
                          "text": "Free text dosage instructions e.g. SIG.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.text.value",
                          "text": "Free text dosage instructions e.g. SIG",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.additionalInstruction",
                      "text": "Supplemental instruction or warnings to the patient - e.g. \"with meals\", \"may cause drowsiness\"",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.additionalInstruction-flyover",
                          "text": "Supplemental instructions to the patient on how to take the medication  (e.g. \"with meals\" or\"take half to one hour before food\") or warnings for the patient about the medication (e.g. \"may cause drowsiness\" or \"avoid exposure of skin to direct sunlight or sunlamps\"). Information about administration or preparation of the medication (e.g. \"infuse as rapidly as possibly via intraperitoneal port\" or take \"immediately following drug x\") should be populated in dosage.text.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.additionalInstruction.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.additionalInstruction.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "Dosage.patientInstruction",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.patientInstruction-flyover",
                          "text": "Instructions in terms that are understood by the patient or consumer.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.patientInstruction.value",
                          "text": "Patient or consumer oriented instructions",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Schedule"
                        }
                      ],
                      "linkId": "Dosage.timing",
                      "text": "When medication should be administered",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.timing-flyover",
                          "text": "When medication should be administered. This attribute might not always be populated while the Dosage.text is expected to be populated.  If both are populated, then the Dosage.text should reflect the content of the Dosage.timing.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.timing.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.timing.date",
                          "text": "date:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Patient"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Practitioner"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "RelatedPerson"
                            }
                          ],
                          "linkId": "Dosage.timing.author",
                          "text": "author:",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "boolean"
                        }
                      ],
                      "linkId": "Dosage.asNeeded",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.asNeeded-flyover",
                          "text": "Indicates whether the Medication is only taken when needed within a specific dosing schedule (Boolean option). Can express \"as needed\" without a reason by setting the Boolean \u003d True.  In this case the CodeableConcept is not populated.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.asNeeded.value",
                          "text": "Take \"as needed\"",
                          "type": "boolean",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.asNeededFor",
                      "text": "Take \"as needed\" (for x)",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.asNeededFor-flyover",
                          "text": "Indicates whether the Medication is only taken based on a precondition for taking the Medication (CodeableConcept). Can express \"as needed\" with a reason by including the CodeableConcept.  In this case the Boolean is assumed to be False, then the dose is given according to the schedule and is not \"prn\" or \"as needed\".",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.asNeededFor.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.asNeededFor.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.site",
                      "text": "Body site to administer to",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.site-flyover",
                          "text": "Body site to administer to. If the use case requires attributes from the BodySite resource (e.g. to identify and track separately) then use the standard extension [http://hl7.org/fhir/StructureDefinition/bodySite](http://hl7.org/fhir/extensions/StructureDefinition-bodySite.html).  May be a summary code, or a reference to a very precise definition of the location, or both.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.site.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.site.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.route",
                      "text": "How drug should enter body",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.route-flyover",
                          "text": "How drug should enter body.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.route.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.route.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "Dosage.method",
                      "text": "Technique for administering medication",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.method-flyover",
                          "text": "Technique for administering medication. Terminologies used often pre-coordinate this term with the route and or form of administration.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.method.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.method.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.pattern[x]._null.Dosage.doseAndRate",
                      "text": "Amount of medication administered, to be administered or typical amount to be administered",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.doseAndRate-flyover",
                          "text": "Depending on the resource,this is the amount of medication administered, to  be administered or typical amount to be administered.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Dosage.doseAndRate.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.type",
                          "text": "The kind of dose or rate specified",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.type-flyover",
                              "text": "The kind of dose or rate specified, for example, ordered or calculated.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.type.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.type.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.dose[x]",
                          "text": "Amount of medication per dose",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.dose[x]-flyover",
                              "text": "Amount of medication per dose. Note that this specifies the quantity of the specified medication, not the quantity for each active ingredient(s). Each ingredient amount can be communicated in the Medication resource. For example, if one wants to communicate that a tablet was 375 mg, where the dose was one tablet, you can use the Medication resource to document that the tablet was comprised of 375 mg of drug XYZ. Alternatively if the dose was 375 mg, then you may only need to use the Medication resource to indicate this was a tablet. If the example were an IV such as dopamine and you wanted to communicate that 400mg of dopamine was mixed in 500 ml of some IV solution, then this would all be communicated in the Medication resource. If the administration is not intended to be instantaneous (rate is present or timing has a duration), this can be specified to convey the total amount to be administered over the period of time as indicated by the schedule e.g. 500 ml in dose, with timing used to convey that this should be done over 4 hours.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.dose[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs24",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Range"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.dose[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.low",
                                      "text": "low:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.high",
                                      "text": "high:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.dose[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.dose[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "Dosage.doseAndRate.rate[x]",
                          "text": "Amount of medication per unit of time",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.rate[x]-flyover",
                              "text": "Amount of medication per unit of time. It is possible to supply both a rate and a doseQuantity to provide full details about how the medication is to be administered and supplied. If the rate is intended to change over time, depending on local rules/regulations, each change should be captured as a new version of the MedicationRequest with an updated rate, or captured with a new MedicationRequest with the new rate.\r\rIt is possible to specify a rate over time (for example, 100 ml/hour) using either the rateRatio and rateQuantity.  The rateQuantity approach requires systems to have the capability to parse UCUM grammar where ml/hour is included rather than a specific ratio where the time is specified as the denominator.  Where a rate such as 500ml over 2 hours is specified, the use of rateRatio may be more semantically correct than specifying using a rateQuantity of 250 mg/hour.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.doseAndRate.rate[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs25",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Ratio"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.numerator",
                                      "text": "numerator:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.denominator",
                                      "text": "denominator:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Range"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.low",
                                      "text": "low:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.high",
                                      "text": "high:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "Dosage.doseAndRate.rate[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Ratio"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerPeriod",
                      "text": "Upper limit on medication per unit of time",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerPeriod-flyover",
                          "text": "Upper limit on medication per unit of time. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example \"2 tablets every 4 hours to a maximum of 8/day\".",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.numerator",
                          "text": "numerator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.denominator",
                          "text": "denominator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerPeriod.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerAdministration",
                      "text": "Upper limit on medication per administration",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerAdministration-flyover",
                          "text": "Upper limit on medication per administration. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example, a body surface area related dose with a maximum amount, such as 1.5 mg/m2 (maximum 2 mg) IV over 5 – 10 minutes would have doseQuantity of 1.5 mg/m2 and maxDosePerAdministration of 2 mg.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerAdministration.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "Dosage.maxDosePerLifetime",
                      "text": "Upper limit on medication per lifetime of the patient",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage.maxDosePerLifetime-flyover",
                          "text": "Upper limit on medication per lifetime of the patient.",
                          "type": "display"
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "Dosage.maxDosePerLifetime.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.pattern[x]._null",
                  "type": "group"
                }
              ]
            }
          ]
        },
        {
          "linkId": "ElementDefinition.example",
          "text": "Example value (as defined for type)",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "linkId": "ElementDefinition.example-display",
              "text": "Examples will most commonly be present for data where it\u0027s not implicitly obvious from either the data type or value set what the values might be.  (I.e. Example values for dates or quantities would generally be unnecessary.)  If the example value is fully populated, the publication tool can generate an instance automatically.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.example-flyover",
              "text": "A sample value for this element demonstrating the type of information that would typically be found in the element.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.example.id",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.example.id-flyover",
                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.example.id.value",
                  "text": "Unique id for inter-element referencing",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.example.extension",
              "text": "Additional content defined by implementations",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.example.extension-flyover",
                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                  "type": "display"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.example.label",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.example.label-flyover",
                  "text": "Describes the purpose of this example among the set of examples.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.example.label.value",
                  "text": "Describes the purpose of this example",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                }
              ],
              "linkId": "ElementDefinition.example.value[x]",
              "text": "Value of Example (one of allowed types)",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.example.value[x]-flyover",
                  "text": "The actual value for the element, which must be one of the types allowed for this element.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.example.value[x]._type",
                  "text": "type",
                  "type": "coding",
                  "required": false,
                  "repeats": false,
                  "answerConstraint": "optionsOnly",
                  "answerValueSet": "#vs26",
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "binary"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "boolean"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "boolean",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "code"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value[x]",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "datetime"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "datetime"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "decimal"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "instant"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.integer64",
                      "text": "Primitive Type integer64",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "integer64-display",
                          "text": "Typically this is used for record counters (e.g. database keys)",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64-flyover",
                          "text": "A very large whole number",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "integer64.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "integer64.id-flyover",
                              "text": "unique id for the element within a resource (for internal references)",
                              "type": "display"
                            },
                            {
                              "linkId": "integer64.id.value",
                              "text": "xml:id (or equivalent in JSON)",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "integer64.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "integer64.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "ElementDefinition.example.value[x]._null.integer64.value",
                          "text": "Primitive value for integer64",
                          "type": "group",
                          "required": false,
                          "repeats": false,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "integer64.value-flyover",
                              "text": "The actual value",
                              "type": "display"
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "time"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "time",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "integer"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "integer",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "uri"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Address"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.line",
                          "text": "line:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.city",
                          "text": "city:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.state",
                          "text": "state:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.postalCode",
                          "text": "post code:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.country",
                          "text": "country:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Annotation"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Attachment"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "CodeableConcept"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.coding",
                          "text": "code:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.CodeableReference",
                      "text": "Reference to a resource or a concept",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "CodeableReference-flyover",
                          "text": "A reference to a resource (by instance), or instead, a reference to a concept defined in a terminology or ontology (by class).",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "CodeableReference.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "CodeableReference.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "CodeableReference.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "CodeableReference.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "CodeableReference.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "CodeableReference.concept",
                          "text": "Reference to a concept (by class)",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "CodeableReference.concept-flyover",
                              "text": "A reference to a concept - e.g. the information is identified by its general class to the degree of precision found in the terminology.",
                              "type": "display"
                            },
                            {
                              "linkId": "CodeableReference.concept.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "CodeableReference.concept.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Reference"
                            }
                          ],
                          "linkId": "CodeableReference.reference",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "CodeableReference.reference-flyover",
                              "text": "A reference to a resource the provides exact details about the information being referenced.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                  "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                }
                              ],
                              "linkId": "CodeableReference.reference.value",
                              "text": "Reference to a resource (by instance)",
                              "type": "reference",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Coding"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "ContactPoint"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "type:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.use",
                          "text": "use:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Name"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.family",
                          "text": "family:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.given",
                          "text": "given:",
                          "type": "string",
                          "required": false,
                          "repeats": true
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Identifier"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.label",
                          "text": "label:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Period"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.low",
                          "text": "start:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.end",
                          "text": "end:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Quantity"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.comparator",
                          "text": "comp:",
                          "type": "coding",
                          "required": false,
                          "repeats": false,
                          "answerConstraint": "optionsOnly"
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "text": "value:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.code",
                          "text": "coded units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.system",
                          "text": "units system:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Range"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.low",
                          "text": "low:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.high",
                          "text": "high:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Ratio"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.numerator",
                          "text": "numerator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.denominator",
                          "text": "denominator:",
                          "type": "decimal",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.units",
                          "text": "units:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.RatioRange",
                      "text": "Range of ratio values",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "RatioRange-display",
                          "text": "The stated low and high value are assumed to have arbitrarily high precision when it comes to determining which values are in the range. I.e. 1.99 is not in the range 2 -\u003e 3.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RatioRange-flyover",
                          "text": "A range of ratios expressed as a low and high numerator and a denominator.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "RatioRange.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RatioRange.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "RatioRange.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "RatioRange.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RatioRange.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Quantity"
                            }
                          ],
                          "linkId": "RatioRange.lowNumerator",
                          "text": "Low Numerator limit",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RatioRange.lowNumerator-flyover",
                              "text": "The value of the low limit numerator. If the low element is missing, the low boundary is not known.",
                              "type": "display"
                            },
                            {
                              "linkId": "RatioRange.lowNumerator.comparator",
                              "text": "comp:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "RatioRange.lowNumerator.value",
                              "text": "value:",
                              "type": "decimal",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.lowNumerator.units",
                              "text": "units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.lowNumerator.code",
                              "text": "coded units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.lowNumerator.system",
                              "text": "units system:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Quantity"
                            }
                          ],
                          "linkId": "RatioRange.highNumerator",
                          "text": "High Numerator limit",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RatioRange.highNumerator-flyover",
                              "text": "The value of the high limit numerator. If the high element is missing, the high boundary is not known.",
                              "type": "display"
                            },
                            {
                              "linkId": "RatioRange.highNumerator.comparator",
                              "text": "comp:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "RatioRange.highNumerator.value",
                              "text": "value:",
                              "type": "decimal",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.highNumerator.units",
                              "text": "units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.highNumerator.code",
                              "text": "coded units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.highNumerator.system",
                              "text": "units system:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Quantity"
                            }
                          ],
                          "linkId": "RatioRange.denominator",
                          "text": "Denominator value",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RatioRange.denominator-flyover",
                              "text": "The value of the denominator.",
                              "type": "display"
                            },
                            {
                              "linkId": "RatioRange.denominator.comparator",
                              "text": "comp:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "RatioRange.denominator.value",
                              "text": "value:",
                              "type": "decimal",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.denominator.units",
                              "text": "units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.denominator.code",
                              "text": "coded units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "RatioRange.denominator.system",
                              "text": "units system:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Reference"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                              "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                            }
                          ],
                          "linkId": "ElementDefinition.example.value[x]._null.value",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "SampledData"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group"
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "Schedule"
                        }
                      ],
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group",
                      "item": [
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.text",
                          "text": "text:",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.date",
                          "text": "date:",
                          "type": "dateTime",
                          "required": false,
                          "repeats": false
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Patient"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "Practitioner"
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                              "valueCode": "RelatedPerson"
                            }
                          ],
                          "linkId": "ElementDefinition.example.value[x]._null.author",
                          "text": "author:",
                          "type": "reference",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.ContactDetail",
                      "text": "Contact information",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ContactDetail-flyover",
                          "text": "Specifies contact information for a person or organization.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "ContactDetail.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ContactDetail.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "ContactDetail.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "ContactDetail.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ContactDetail.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "ContactDetail.name",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ContactDetail.name-flyover",
                              "text": "The name of an individual to contact. If there is no named individual, the telecom information is for the organization as a whole.",
                              "type": "display"
                            },
                            {
                              "linkId": "ContactDetail.name.value",
                              "text": "Name of an individual to contact",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "ContactPoint"
                            }
                          ],
                          "linkId": "ContactDetail.telecom",
                          "text": "Contact details for individual or organization",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ContactDetail.telecom-flyover",
                              "text": "The contact details for the individual (if a name was provided) or the organization.",
                              "type": "display"
                            },
                            {
                              "linkId": "ContactDetail.telecom.system",
                              "text": "type:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "ContactDetail.telecom.value",
                              "text": "value:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ContactDetail.telecom.use",
                              "text": "use:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.DataRequirement",
                      "text": "Describes a required data item",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "DataRequirement-flyover",
                          "text": "Describes a required data item for evaluation in terms of the type of data, and optional code or date-based filters of the data.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "DataRequirement.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "DataRequirement.type",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.type-flyover",
                              "text": "The type of the required data, specified as the type name of a resource. For profiles, this value is set to the type of the base resource of the profile.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.type.value",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "DataRequirement.profile",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.profile-flyover",
                              "text": "The profile of the required data, specified as the uri of the profile definition.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.profile.value",
                              "text": "The profile of the required data",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "DataRequirement.subject[x]",
                          "text": "E.g. Patient, Practitioner, RelatedPerson, Organization, Location, Device",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.subject[x]-flyover",
                              "text": "The intended subjects of the data requirement. If this element is not provided, a Patient subject is assumed. The subject of a data requirement is critical, as the data being specified is determined with respect to a particular subject. This corresponds roughly to the notion of a Compartment in that it limits what data is available based on its relationship to the subject. In CQL, this corresponds to the context declaration.",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.subject[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs27",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "CodeableConcept"
                                    }
                                  ],
                                  "linkId": "DataRequirement.subject[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "DataRequirement.subject[x]._null.coding",
                                      "text": "code:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "DataRequirement.subject[x]._null.text",
                                      "text": "text:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Reference"
                                    }
                                  ],
                                  "linkId": "DataRequirement.subject[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                          "valueCode": "Group"
                                        },
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                          "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                        }
                                      ],
                                      "linkId": "DataRequirement.subject[x]._null.value",
                                      "type": "reference",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "DataRequirement.mustSupport",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.mustSupport-flyover",
                              "text": "Indicates that specific elements of the type are referenced by the knowledge module and must be supported by the consumer in order to obtain an effective evaluation. This does not mean that a value is required for this element, only that the consuming system must understand the element and be able to provide values for it if they are available. \n\nThe value of mustSupport SHALL be a FHIRPath resolvable on the type of the DataRequirement. The path SHALL consist only of identifiers, constant indexers, and .resolve() (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details).",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.mustSupport.value",
                              "text": "Indicates specific structure elements that are referenced by the knowledge module",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.DataRequirement.codeFilter",
                          "text": "What codes are expected",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter-flyover",
                              "text": "Code filters specify additional constraints on the data, specifying the value set of interest for a particular element of the data. Each code filter defines an additional constraint on the data, i.e. code filters are AND\u0027ed, not OR\u0027ed.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.id",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.codeFilter.id-flyover",
                                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.codeFilter.id.value",
                                  "text": "Unique id for inter-element referencing",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "linkId": "DataRequirement.codeFilter.extension",
                              "text": "Additional content defined by implementations",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.codeFilter.extension-flyover",
                                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                                  "type": "display"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.path",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.codeFilter.path-flyover",
                                  "text": "The code-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type code, Coding, or CodeableConcept. The path attribute contains a [Simple FHIRPath Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.codeFilter.path.value",
                                  "text": "A code-valued attribute to filter on",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.searchParam",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.codeFilter.searchParam-flyover",
                                  "text": "A token parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type code, Coding, or CodeableConcept.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.codeFilter.searchParam.value",
                                  "text": "A coded (token) parameter to search on",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "uri"
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.valueSet",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.codeFilter.valueSet-flyover",
                                  "text": "The valueset for the code filter. The valueSet and code elements are additive. If valueSet is specified, the filter will return only those data items for which the value of the code-valued element specified in the path is a member of the specified valueset.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.codeFilter.valueSet.value",
                                  "text": "ValueSet for the filter",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Coding"
                                }
                              ],
                              "linkId": "DataRequirement.codeFilter.code",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.codeFilter.code-flyover",
                                  "text": "The codes for the code filter. If values are given, the filter will return only those data items for which the code-valued attribute specified by the path has a value that is one of the specified codes. If codes are specified in addition to a value set, the filter returns items matching a code in the value set or one of the specified codes.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.codeFilter.code.value",
                                  "text": "What code is expected",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.DataRequirement.dateFilter",
                          "text": "What dates/date ranges are expected",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter-flyover",
                              "text": "Date filters specify additional constraints on the data in terms of the applicable date range for specific elements. Each date filter specifies an additional constraint on the data, i.e. date filters are AND\u0027ed, not OR\u0027ed.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.id",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.id-flyover",
                                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.dateFilter.id.value",
                                  "text": "Unique id for inter-element referencing",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "linkId": "DataRequirement.dateFilter.extension",
                              "text": "Additional content defined by implementations",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.extension-flyover",
                                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                                  "type": "display"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.path",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.path-flyover",
                                  "text": "The date-valued attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of type date, dateTime, Period, Schedule, or Timing. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.dateFilter.path.value",
                                  "text": "A date-valued attribute to filter on",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.searchParam",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.searchParam-flyover",
                                  "text": "A date parameter that refers to a search parameter defined on the specified type of the DataRequirement, and which searches on elements of type date, dateTime, Period, Schedule, or Timing.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.dateFilter.searchParam.value",
                                  "text": "A date valued parameter to search on",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                }
                              ],
                              "linkId": "DataRequirement.dateFilter.value[x]",
                              "text": "The value of the filter, as a Period, DateTime, or Duration value",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.dateFilter.value[x]-flyover",
                                  "text": "The value of the filter. If period is specified, the filter will return only those data items that fall within the bounds determined by the Period, inclusive of the period boundaries. If dateTime is specified, the filter will return only those data items that are equal to the specified dateTime. If a Duration is specified, the filter will return only those data items that fall within Duration before now.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.dateFilter.value[x]._type",
                                  "text": "type",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly",
                                  "answerValueSet": "#vs28",
                                  "item": [
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "datetime"
                                        }
                                      ],
                                      "linkId": "DataRequirement.dateFilter.value[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                          "type": "dateTime",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Period"
                                        }
                                      ],
                                      "linkId": "DataRequirement.dateFilter.value[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.low",
                                          "text": "start:",
                                          "type": "dateTime",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.end",
                                          "text": "end:",
                                          "type": "dateTime",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Quantity"
                                        }
                                      ],
                                      "linkId": "DataRequirement.dateFilter.value[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.comparator",
                                          "text": "comp:",
                                          "type": "coding",
                                          "required": false,
                                          "repeats": false,
                                          "answerConstraint": "optionsOnly"
                                        },
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.value",
                                          "text": "value:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.units",
                                          "text": "units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.code",
                                          "text": "coded units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.dateFilter.value[x]._null.system",
                                          "text": "units system:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.DataRequirement.valueFilter",
                          "text": "What values are expected",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter-flyover",
                              "text": "Value filters specify additional constraints on the data for elements other than code-valued or date-valued. Each value filter specifies an additional constraint on the data (i.e. valueFilters are AND\u0027ed, not OR\u0027ed).",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.id",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.id-flyover",
                                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.valueFilter.id.value",
                                  "text": "Unique id for inter-element referencing",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "linkId": "DataRequirement.valueFilter.extension",
                              "text": "Additional content defined by implementations",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.extension-flyover",
                                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                                  "type": "display"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.path",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.path-flyover",
                                  "text": "The attribute of the filter. The specified path SHALL be a FHIRPath resolvable on the specified type of the DataRequirement, and SHALL consist only of identifiers, constant indexers, and .resolve(). The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements (see the [Simple FHIRPath Profile](fhirpath.html#simple) for full details). Note that the index must be an integer constant. The path must resolve to an element of a type that is comparable to the valueFilter.value[x] element for the filter. The path attribute contains a [Simple FHIR Subset](fhirpath.html#simple) that allows path traversal, but not calculation.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.valueFilter.path.value",
                                  "text": "An attribute to filter on",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.searchParam",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.searchParam-flyover",
                                  "text": "A search parameter defined on the specified type of the DataRequirement, and which searches on elements of a type compatible with the type of the valueFilter.value[x] for the filter.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.valueFilter.searchParam.value",
                                  "text": "A parameter to search on",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "code"
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.comparator",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.comparator-flyover",
                                  "text": "The comparator to be used to determine whether the value is matching.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.valueFilter.comparator.value",
                                  "text": "comparator",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOrType"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                }
                              ],
                              "linkId": "DataRequirement.valueFilter.value[x]",
                              "text": "The value of the filter, as a Period, DateTime, or Duration value",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.valueFilter.value[x]-flyover",
                                  "text": "The value of the filter.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.valueFilter.value[x]._type",
                                  "text": "type",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly",
                                  "answerValueSet": "#vs29",
                                  "item": [
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "datetime"
                                        }
                                      ],
                                      "linkId": "DataRequirement.valueFilter.value[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                          "type": "dateTime",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Period"
                                        }
                                      ],
                                      "linkId": "DataRequirement.valueFilter.value[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.low",
                                          "text": "start:",
                                          "type": "dateTime",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.end",
                                          "text": "end:",
                                          "type": "dateTime",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Quantity"
                                        }
                                      ],
                                      "linkId": "DataRequirement.valueFilter.value[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.comparator",
                                          "text": "comp:",
                                          "type": "coding",
                                          "required": false,
                                          "repeats": false,
                                          "answerConstraint": "optionsOnly"
                                        },
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.value",
                                          "text": "value:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.units",
                                          "text": "units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.code",
                                          "text": "coded units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "DataRequirement.valueFilter.value[x]._null.system",
                                          "text": "units system:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "integer"
                            }
                          ],
                          "linkId": "DataRequirement.limit",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.limit-flyover",
                              "text": "Specifies a maximum number of results that are required (uses the _count search parameter). This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\".",
                              "type": "display"
                            },
                            {
                              "linkId": "DataRequirement.limit.value",
                              "text": "Number of results",
                              "type": "integer",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.DataRequirement.sort",
                          "text": "Order of the results",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "linkId": "DataRequirement.sort-display",
                              "text": "This element can be used in combination with the sort element to specify quota requirements such as \"the most recent 5\" or \"the highest 5\". When multiple sorts are specified, they are applied in the order they appear in the resource.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "DataRequirement.sort-flyover",
                              "text": "Specifies the order of the results to be returned.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.sort.id",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.sort.id-flyover",
                                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.sort.id.value",
                                  "text": "Unique id for inter-element referencing",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "linkId": "DataRequirement.sort.extension",
                              "text": "Additional content defined by implementations",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.sort.extension-flyover",
                                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                                  "type": "display"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "DataRequirement.sort.path",
                              "type": "group",
                              "required": true,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.sort.path-flyover",
                                  "text": "The attribute of the sort. The specified path must be resolvable from the type of the required data. The path is allowed to contain qualifiers (.) to traverse sub-elements, as well as indexers ([x]) to traverse multiple-cardinality sub-elements. Note that the index must be an integer constant.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.sort.path.value",
                                  "text": "The name of the attribute to perform the sort",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "code"
                                }
                              ],
                              "linkId": "DataRequirement.sort.direction",
                              "type": "group",
                              "required": true,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "DataRequirement.sort.direction-flyover",
                                  "text": "The direction of the sort, ascending or descending.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "DataRequirement.sort.direction.value",
                                  "text": "direction",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOrType"
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.Expression",
                      "text": "An expression that can be used to generate a value",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Expression-flyover",
                          "text": "A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Expression.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Expression.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Expression.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Expression.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Expression.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Expression.description",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Expression.description-flyover",
                              "text": "A brief, natural language description of the condition that effectively communicates the intended semantics.",
                              "type": "display"
                            },
                            {
                              "linkId": "Expression.description.value",
                              "text": "Natural language description of the condition",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "Expression.name",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Expression.name-flyover",
                              "text": "A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.",
                              "type": "display"
                            },
                            {
                              "linkId": "Expression.name.value",
                              "text": "name",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "Expression.language",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Expression.language-flyover",
                              "text": "The media type of the language for the expression.",
                              "type": "display"
                            },
                            {
                              "linkId": "Expression.language.value",
                              "text": "language",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Expression.expression",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Expression.expression-flyover",
                              "text": "An expression in the specified language that returns a value. If Expression.expression and Expression.reference are both present, the Expression.expression might just be a name pointing something within the referenced content.",
                              "type": "display"
                            },
                            {
                              "linkId": "Expression.expression.value",
                              "text": "Expression in specified language",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "Expression.reference",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Expression.reference-flyover",
                              "text": "A URI that defines where the expression is found. If both a reference and an expression is found, the reference SHALL point to the same expression.",
                              "type": "display"
                            },
                            {
                              "linkId": "Expression.reference.value",
                              "text": "Where the expression is found",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.ParameterDefinition",
                      "text": "Definition of a parameter to a module",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ParameterDefinition-flyover",
                          "text": "The parameters to the module. This collection specifies both the input and output parameters. Input parameters are provided by the caller as part of the $evaluate operation. Output parameters are included in the GuidanceResponse.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "ParameterDefinition.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "ParameterDefinition.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "ParameterDefinition.name",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.name-flyover",
                              "text": "The name of the parameter used to allow access to the value of the parameter in evaluation contexts.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.name.value",
                              "text": "name",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "ParameterDefinition.use",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.use-flyover",
                              "text": "Whether the parameter is input or output for the module.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.use.value",
                              "text": "use",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "integer"
                            }
                          ],
                          "linkId": "ParameterDefinition.min",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.min-flyover",
                              "text": "The minimum number of times this parameter SHALL appear in the request or response.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.min.value",
                              "text": "Minimum cardinality",
                              "type": "integer",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "ParameterDefinition.max",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.max-flyover",
                              "text": "The maximum number of times this element is permitted to appear in the request or response.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.max.value",
                              "text": "Maximum cardinality (a number of *)",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "ParameterDefinition.documentation",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.documentation-flyover",
                              "text": "A brief discussion of what the parameter is for and how it is used by the module.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.documentation.value",
                              "text": "A brief description of the parameter",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "ParameterDefinition.type",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.type-flyover",
                              "text": "The type of the parameter.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.type.value",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "ParameterDefinition.profile",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ParameterDefinition.profile-flyover",
                              "text": "If specified, this indicates a profile that the input data must conform to, or that the output data will conform to.",
                              "type": "display"
                            },
                            {
                              "linkId": "ParameterDefinition.profile.value",
                              "text": "What profile the value is expected to be",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.RelatedArtifact",
                      "text": "Related artifacts for a knowledge resource",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "RelatedArtifact-display",
                          "text": "Each related artifact is either an attachment, or a reference to another knowledge resource, but not both.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "RelatedArtifact-flyover",
                          "text": "Related artifacts such as additional documentation, justification, or bibliographic references.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "RelatedArtifact.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "RelatedArtifact.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "RelatedArtifact.type",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.type-flyover",
                              "text": "The type of relationship to the related artifact. The presence of both sides of a relationship type (e.g. successor and predecessor) is required to support use cases where one side of a relationship is not represented in FHIR. However, this feature SHALL NOT be used to create bi-directional resource links in FHIR instances. Specifically, following the methodology of \"new points to old\" and \"many points to one\", when using related artifact elements to describe and reference FHIR resources, the type element SHALL be drawn from the fhir-related-artifact-type ValueSet.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.type.value",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "RelatedArtifact.classifier",
                          "text": "Additional classifiers",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.classifier-flyover",
                              "text": "Provides additional classifiers of the related artifact.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.classifier.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "RelatedArtifact.classifier.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "RelatedArtifact.label",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.label-flyover",
                              "text": "A short label that can be used to reference the citation from elsewhere in the containing artifact, such as a footnote index.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.label.value",
                              "text": "Short label",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "RelatedArtifact.display",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.display-flyover",
                              "text": "A brief description of the document or knowledge resource being referenced, suitable for display to a consumer.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.display.value",
                              "text": "Brief description of the related artifact",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "RelatedArtifact.citation",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.citation-flyover",
                              "text": "A bibliographic citation for the related artifact. This text SHOULD be formatted according to an accepted citation format. Additional structured information about citations should be captured as extensions.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.citation.value",
                              "text": "Bibliographic citation for the artifact",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Attachment"
                            }
                          ],
                          "linkId": "RelatedArtifact.document",
                          "text": "What document is being referenced",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.document-flyover",
                              "text": "The document being referenced, represented as an attachment. This is exclusive with the resource element.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "RelatedArtifact.resource",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.resource-flyover",
                              "text": "The related artifact, such as a library, value set, profile, or other knowledge resource. If the type is predecessor, this is a reference to the succeeding knowledge resource. If the type is successor, this is a reference to the prior knowledge resource.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.resource.value",
                              "text": "What artifact is being referenced",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Reference"
                            }
                          ],
                          "linkId": "RelatedArtifact.resourceReference",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.resourceReference-flyover",
                              "text": "The related artifact, if the artifact is not a canonical resource, or a resource reference to a canonical resource. If both resource and resourceReference are present, they SHOULD be consistent and reference the same resource. Although relatedArtifact is intended to support references to definitional resources, there are cases where non-definitional resources can be definitional (such as Location where the kind is mode). Related artifacts SHOULD be used to reference definitional resources, and profiles SHOULD be used to make that explicit for particular use cases.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                  "valueCode": "Resource"
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                  "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                }
                              ],
                              "linkId": "RelatedArtifact.resourceReference.value",
                              "text": "What artifact, if not a conformance resource",
                              "type": "reference",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationStatus",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.publicationStatus-flyover",
                              "text": "The publication status of the artifact being referred to.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.publicationStatus.value",
                              "text": "publication status",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "datetime"
                            }
                          ],
                          "linkId": "RelatedArtifact.publicationDate",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "RelatedArtifact.publicationDate-flyover",
                              "text": "The date of publication of the artifact being referred to.",
                              "type": "display"
                            },
                            {
                              "linkId": "RelatedArtifact.publicationDate.value",
                              "text": "Date of publication of the artifact being referred to",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.TriggerDefinition",
                      "text": "Defines an expected trigger for a module",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "TriggerDefinition-display",
                          "text": "If an event is a named-event, it means the event is completely pre-coordinated, and no other information can be specified for the event. If the event is one of the data- events, the data and condition elements specify the triggering criteria. The data element specifies the structured component, and the condition element provides additional optional refinement of that structured component. If the event is periodic, the timing element defines when the event is triggered. For both data- and periodic events, a name can be provided as a shorthand for the formal semantics provided by the other elements.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "TriggerDefinition-flyover",
                          "text": "A description of a triggering event. Triggering events can be named events, data events, or periodic, as determined by the type element.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "TriggerDefinition.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "TriggerDefinition.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "TriggerDefinition.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "code"
                            }
                          ],
                          "linkId": "TriggerDefinition.type",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.type-flyover",
                              "text": "The type of triggering event.",
                              "type": "display"
                            },
                            {
                              "linkId": "TriggerDefinition.type.value",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOrType"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "TriggerDefinition.name",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.name-flyover",
                              "text": "A formal name for the event. This may be an absolute URI that identifies the event formally (e.g. from a trigger registry), or a simple relative URI that identifies the event in a local context. An event name can be provided for all event types, but is required for named events. If a name is provided for a type other than named events, it is considered to be a shorthand for the semantics described by the formal description of the event.",
                              "type": "display"
                            },
                            {
                              "linkId": "TriggerDefinition.name.value",
                              "text": "Name or URI that identifies the event",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "TriggerDefinition.code",
                          "text": "Coded definition of the event",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.code-flyover",
                              "text": "A code that identifies the event.",
                              "type": "display"
                            },
                            {
                              "linkId": "TriggerDefinition.code.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "TriggerDefinition.code.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "uri"
                            }
                          ],
                          "linkId": "TriggerDefinition.subscriptionTopic",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.subscriptionTopic-flyover",
                              "text": "A reference to a SubscriptionTopic resource that defines the event. If this element is provided, no other information about the trigger definition may be supplied.",
                              "type": "display"
                            },
                            {
                              "linkId": "TriggerDefinition.subscriptionTopic.value",
                              "text": "What event",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "TriggerDefinition.timing[x]",
                          "text": "Timing of the event",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.timing[x]-flyover",
                              "text": "The timing of the event (if this is a periodic trigger).",
                              "type": "display"
                            },
                            {
                              "linkId": "TriggerDefinition.timing[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs30",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Schedule"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "TriggerDefinition.timing[x]._null.text",
                                      "text": "text:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "TriggerDefinition.timing[x]._null.date",
                                      "text": "date:",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                          "valueCode": "Patient"
                                        },
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                          "valueCode": "Practitioner"
                                        },
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                          "valueCode": "RelatedPerson"
                                        }
                                      ],
                                      "linkId": "TriggerDefinition.timing[x]._null.author",
                                      "text": "author:",
                                      "type": "reference",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Reference"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                          "valueCode": "Schedule"
                                        },
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                          "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                        }
                                      ],
                                      "linkId": "TriggerDefinition.timing[x]._null.value",
                                      "type": "reference",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "TriggerDefinition.timing[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "datetime"
                                    }
                                  ],
                                  "linkId": "TriggerDefinition.timing[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "TriggerDefinition.timing[x]._null.value",
                                      "type": "dateTime",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.TriggerDefinition.data",
                          "text": "Triggering data of the event (multiple \u003d \u0027and\u0027)",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "linkId": "TriggerDefinition.data-display",
                              "text": "This element shall be present for any data type trigger.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.data-flyover",
                              "text": "The triggering data of the event (if this is a data trigger). If more than one data is requirement is specified, then all the data requirements must be true.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "ElementDefinition.example.value[x]._null.TriggerDefinition.condition",
                          "text": "Whether the event triggers (boolean expression)",
                          "type": "group",
                          "required": false,
                          "repeats": false,
                          "item": [
                            {
                              "linkId": "TriggerDefinition.condition-display",
                              "text": "This element can be only be specified for data type triggers and provides additional semantics for the trigger. The context available within the condition is based on the type of data event. For all events, the current resource will be available as context. In addition, for modification events, the previous resource will also be available. The expression may be inlined, or may be a simple absolute URI, which is a reference to a named expression within a logic library referenced by a library element or extension within the containing resource. If the expression is a FHIR Path expression, it evaluates in the context of a resource of one of the type identified in the data requirement, and may also refer to the variable %previous for delta comparisons on events of type data-changed, data-modified, and data-deleted which will always have the same type.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "TriggerDefinition.condition-flyover",
                              "text": "A boolean-valued expression that is evaluated in the context of the container of the trigger definition and returns whether or not the trigger fires.",
                              "type": "display"
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.UsageContext",
                      "text": "Describes the context of use for a conformance or knowledge resource",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "UsageContext-flyover",
                          "text": "Specifies clinical/business/etc. metadata that can be used to retrieve, index and/or categorize an artifact. This metadata can either be specific to the applicable population (e.g., age category, DRG) or the specific context of care (e.g., venue, care setting, provider of care).",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "UsageContext.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "UsageContext.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "UsageContext.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "UsageContext.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "UsageContext.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Coding"
                            }
                          ],
                          "linkId": "UsageContext.code",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "UsageContext.code-flyover",
                              "text": "A code that identifies the type of context being specified by this usage context.",
                              "type": "display"
                            },
                            {
                              "linkId": "UsageContext.code.value",
                              "text": "Type of context being specified",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            }
                          ],
                          "linkId": "UsageContext.value[x]",
                          "text": "Value that defines the context",
                          "type": "group",
                          "required": true,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "UsageContext.value[x]-flyover",
                              "text": "A value that defines the context specified in this context of use. The interpretation of the value is defined by the code.",
                              "type": "display"
                            },
                            {
                              "linkId": "UsageContext.value[x]._type",
                              "text": "type",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly",
                              "answerValueSet": "#vs31",
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "CodeableConcept"
                                    }
                                  ],
                                  "linkId": "UsageContext.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "UsageContext.value[x]._null.coding",
                                      "text": "code:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "UsageContext.value[x]._null.text",
                                      "text": "text:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Quantity"
                                    }
                                  ],
                                  "linkId": "UsageContext.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "UsageContext.value[x]._null.comparator",
                                      "text": "comp:",
                                      "type": "coding",
                                      "required": false,
                                      "repeats": false,
                                      "answerConstraint": "optionsOnly"
                                    },
                                    {
                                      "linkId": "UsageContext.value[x]._null.value",
                                      "text": "value:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "UsageContext.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "UsageContext.value[x]._null.code",
                                      "text": "coded units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "UsageContext.value[x]._null.system",
                                      "text": "units system:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Range"
                                    }
                                  ],
                                  "linkId": "UsageContext.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "linkId": "UsageContext.value[x]._null.low",
                                      "text": "low:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "UsageContext.value[x]._null.high",
                                      "text": "high:",
                                      "type": "decimal",
                                      "required": false,
                                      "repeats": false
                                    },
                                    {
                                      "linkId": "UsageContext.value[x]._null.units",
                                      "text": "units:",
                                      "type": "string",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                },
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                      "valueString": "Reference"
                                    }
                                  ],
                                  "linkId": "UsageContext.value[x]._null",
                                  "type": "group",
                                  "item": [
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                          "valueCode": "PlanDefinition, ResearchStudy, InsurancePlan, HealthcareService, Group, Location, Organization"
                                        },
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                          "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                        }
                                      ],
                                      "linkId": "UsageContext.value[x]._null.value",
                                      "type": "reference",
                                      "required": false,
                                      "repeats": false
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.Availability",
                      "text": "Availability data for an {item}",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Availability-flyover",
                          "text": "Availability data for an {item}.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Availability.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Availability.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Availability.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.Availability.availableTime",
                          "text": "Times the {item} is available",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.availableTime-flyover",
                              "text": "Times the {item} is available.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "Availability.availableTime.id",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.availableTime.id-flyover",
                                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.availableTime.id.value",
                                  "text": "Unique id for inter-element referencing",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "linkId": "Availability.availableTime.extension",
                              "text": "Additional content defined by implementations",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.availableTime.extension-flyover",
                                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                                  "type": "display"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "code"
                                }
                              ],
                              "linkId": "Availability.availableTime.daysOfWeek",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.availableTime.daysOfWeek-flyover",
                                  "text": "mon | tue | wed | thu | fri | sat | sun.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.availableTime.daysOfWeek.value",
                                  "text": "days of week",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOrType"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "boolean"
                                }
                              ],
                              "linkId": "Availability.availableTime.allDay",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.availableTime.allDay-flyover",
                                  "text": "Always available? i.e. 24 hour service.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.availableTime.allDay.value",
                                  "text": "Always available? i.e. 24 hour service",
                                  "type": "boolean",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "time"
                                }
                              ],
                              "linkId": "Availability.availableTime.availableStartTime",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.availableTime.availableStartTime-flyover",
                                  "text": "Opening time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.availableTime.availableStartTime.value",
                                  "text": "Opening time of day (ignored if allDay \u003d true)",
                                  "type": "time",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "time"
                                }
                              ],
                              "linkId": "Availability.availableTime.availableEndTime",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.availableTime.availableEndTime-flyover",
                                  "text": "Closing time of day (ignored if allDay \u003d true). The timezone is expected to be specified or implied by the context this datatype is used.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.availableTime.availableEndTime.value",
                                  "text": "Closing time of day (ignored if allDay \u003d true)",
                                  "type": "time",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.Availability.notAvailableTime",
                          "text": "Not available during this time due to provided reason",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Availability.notAvailableTime-flyover",
                              "text": "Not available during this time due to provided reason.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.id",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.notAvailableTime.id-flyover",
                                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.notAvailableTime.id.value",
                                  "text": "Unique id for inter-element referencing",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "linkId": "Availability.notAvailableTime.extension",
                              "text": "Additional content defined by implementations",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.notAvailableTime.extension-flyover",
                                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                                  "type": "display"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.description",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.notAvailableTime.description-flyover",
                                  "text": "Reason presented to the user explaining why time not available. The reason will generally be provided to give the textual reason for displaying when the {item} is not available, e.g. \u0027Closed public holidays\u0027 or \u0027Independence Day\u0027. In cases such as this, the `during` might not be included and local knowledge would be required in such cases (as don\u0027t desire to keep updating when the holiday occurs each year).\n\ne.g.2: \u0027Closed for maintenance over the summer\u0027 for this example you would want to include the `during` period, unless this was a university hospital and the \"summer\" period was well known, but would recommend its inclusion anyway.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.notAvailableTime.description.value",
                                  "text": "Reason presented to the user explaining why time not available",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "Period"
                                }
                              ],
                              "linkId": "Availability.notAvailableTime.during",
                              "text": "Service not available during this period",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Availability.notAvailableTime.during-flyover",
                                  "text": "Service not available during this period.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Availability.notAvailableTime.during.low",
                                  "text": "start:",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                },
                                {
                                  "linkId": "Availability.notAvailableTime.during.end",
                                  "text": "end:",
                                  "type": "dateTime",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.ExtendedContactDetail",
                      "text": "Contact information",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "linkId": "ExtendedContactDetail-display",
                          "text": "This datatype may be sparsely populated, i.e. only contain a purpose and phone number or address, but other cases could be completed filled out.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "ExtendedContactDetail-flyover",
                          "text": "Specifies contact information for a specific purpose over a period of time, might be handled/monitored by a specific named person or organization.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "ExtendedContactDetail.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "ExtendedContactDetail.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.purpose",
                          "text": "The type of contact",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.purpose-flyover",
                              "text": "The purpose/type of contact. If no purpose is defined, then these contact details may be used for any purpose.",
                              "type": "display"
                            },
                            {
                              "linkId": "ExtendedContactDetail.purpose.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "ExtendedContactDetail.purpose.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Name"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.name",
                          "text": "Name of an individual to contact",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.name-flyover",
                              "text": "The name of an individual to contact, some types of contact detail are usually blank. If there is no named individual, the telecom/address information is not generally monitored by a specific individual.",
                              "type": "display"
                            },
                            {
                              "linkId": "ExtendedContactDetail.name.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.name.family",
                              "text": "family:",
                              "type": "string",
                              "required": false,
                              "repeats": true
                            },
                            {
                              "linkId": "ExtendedContactDetail.name.given",
                              "text": "given:",
                              "type": "string",
                              "required": false,
                              "repeats": true
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "ContactPoint"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.telecom",
                          "text": "Contact details (e.g.phone/fax/url)",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.telecom-flyover",
                              "text": "The contact details application for the purpose defined.",
                              "type": "display"
                            },
                            {
                              "linkId": "ExtendedContactDetail.telecom.system",
                              "text": "type:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "ExtendedContactDetail.telecom.value",
                              "text": "value:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.telecom.use",
                              "text": "use:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Address"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.address",
                          "text": "Address for the contact",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.address-flyover",
                              "text": "Address for the contact. More than 1 address would be for different purposes, and thus should be entered as a different entry,.",
                              "type": "display"
                            },
                            {
                              "linkId": "ExtendedContactDetail.address.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.address.line",
                              "text": "line:",
                              "type": "string",
                              "required": false,
                              "repeats": true
                            },
                            {
                              "linkId": "ExtendedContactDetail.address.city",
                              "text": "city:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.address.state",
                              "text": "state:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.address.postalCode",
                              "text": "post code:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.address.country",
                              "text": "country:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.address.use",
                              "text": "use:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Reference"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.organization",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.organization-flyover",
                              "text": "This contact detail is handled/monitored by a specific organization. If the name is provided in the contact, then it is referring to the named individual within this organization.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                  "valueCode": "Organization"
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceFilter",
                                  "valueString": "subject\u003d$subj\u0026patient\u003d$subj\u0026encounter\u003d$encounter"
                                }
                              ],
                              "linkId": "ExtendedContactDetail.organization.value",
                              "text": "This contact detail is handled/monitored by a specific organization",
                              "type": "reference",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Period"
                            }
                          ],
                          "linkId": "ExtendedContactDetail.period",
                          "text": "Period that this contact was valid for usage",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "ExtendedContactDetail.period-flyover",
                              "text": "Period that this contact was valid for usage. If the details have multiple periods, then enter in a new ExtendedContact with the new period.",
                              "type": "display"
                            },
                            {
                              "linkId": "ExtendedContactDetail.period.low",
                              "text": "start:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "ExtendedContactDetail.period.end",
                              "text": "end:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null.Dosage",
                      "text": "How the medication is/was taken or should be taken",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "Dosage-flyover",
                          "text": "Indicates how the medication is/was taken or should be taken by the patient.",
                          "type": "display"
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Dosage.id",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.id-flyover",
                              "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.id.value",
                              "text": "Unique id for inter-element referencing",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "Dosage.extension",
                          "text": "Additional content defined by implementations",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.extension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "linkId": "Dosage.modifierExtension",
                          "text": "Extensions that cannot be ignored even if unrecognized",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.modifierExtension-flyover",
                              "text": "May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element\u0027s descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.\n\nModifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                              "type": "display"
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "integer"
                            }
                          ],
                          "linkId": "Dosage.sequence",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.sequence-flyover",
                              "text": "Indicates the order in which the dosage instructions should be applied or interpreted.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.sequence.value",
                              "text": "The order of the dosage instructions",
                              "type": "integer",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Dosage.text",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.text-flyover",
                              "text": "Free text dosage instructions e.g. SIG.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.text.value",
                              "text": "Free text dosage instructions e.g. SIG",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.additionalInstruction",
                          "text": "Supplemental instruction or warnings to the patient - e.g. \"with meals\", \"may cause drowsiness\"",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.additionalInstruction-flyover",
                              "text": "Supplemental instructions to the patient on how to take the medication  (e.g. \"with meals\" or\"take half to one hour before food\") or warnings for the patient about the medication (e.g. \"may cause drowsiness\" or \"avoid exposure of skin to direct sunlight or sunlamps\"). Information about administration or preparation of the medication (e.g. \"infuse as rapidly as possibly via intraperitoneal port\" or take \"immediately following drug x\") should be populated in dosage.text.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.additionalInstruction.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.additionalInstruction.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "string"
                            }
                          ],
                          "linkId": "Dosage.patientInstruction",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.patientInstruction-flyover",
                              "text": "Instructions in terms that are understood by the patient or consumer.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.patientInstruction.value",
                              "text": "Patient or consumer oriented instructions",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Schedule"
                            }
                          ],
                          "linkId": "Dosage.timing",
                          "text": "When medication should be administered",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.timing-flyover",
                              "text": "When medication should be administered. This attribute might not always be populated while the Dosage.text is expected to be populated.  If both are populated, then the Dosage.text should reflect the content of the Dosage.timing.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.timing.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.timing.date",
                              "text": "date:",
                              "type": "dateTime",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                  "valueCode": "Patient"
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                  "valueCode": "Practitioner"
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-referenceResource",
                                  "valueCode": "RelatedPerson"
                                }
                              ],
                              "linkId": "Dosage.timing.author",
                              "text": "author:",
                              "type": "reference",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "boolean"
                            }
                          ],
                          "linkId": "Dosage.asNeeded",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.asNeeded-flyover",
                              "text": "Indicates whether the Medication is only taken when needed within a specific dosing schedule (Boolean option). Can express \"as needed\" without a reason by setting the Boolean \u003d True.  In this case the CodeableConcept is not populated.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.asNeeded.value",
                              "text": "Take \"as needed\"",
                              "type": "boolean",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.asNeededFor",
                          "text": "Take \"as needed\" (for x)",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.asNeededFor-flyover",
                              "text": "Indicates whether the Medication is only taken based on a precondition for taking the Medication (CodeableConcept). Can express \"as needed\" with a reason by including the CodeableConcept.  In this case the Boolean is assumed to be False, then the dose is given according to the schedule and is not \"prn\" or \"as needed\".",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.asNeededFor.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.asNeededFor.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.site",
                          "text": "Body site to administer to",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.site-flyover",
                              "text": "Body site to administer to. If the use case requires attributes from the BodySite resource (e.g. to identify and track separately) then use the standard extension [http://hl7.org/fhir/StructureDefinition/bodySite](http://hl7.org/fhir/extensions/StructureDefinition-bodySite.html).  May be a summary code, or a reference to a very precise definition of the location, or both.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.site.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.site.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.route",
                          "text": "How drug should enter body",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.route-flyover",
                              "text": "How drug should enter body.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.route.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.route.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "CodeableConcept"
                            }
                          ],
                          "linkId": "Dosage.method",
                          "text": "Technique for administering medication",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.method-flyover",
                              "text": "Technique for administering medication. Terminologies used often pre-coordinate this term with the route and or form of administration.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.method.coding",
                              "text": "code:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.method.text",
                              "text": "text:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "linkId": "ElementDefinition.example.value[x]._null.Dosage.doseAndRate",
                          "text": "Amount of medication administered, to be administered or typical amount to be administered",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.doseAndRate-flyover",
                              "text": "Depending on the resource,this is the amount of medication administered, to  be administered or typical amount to be administered.",
                              "type": "display"
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "string"
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.id",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.id-flyover",
                                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Dosage.doseAndRate.id.value",
                                  "text": "Unique id for inter-element referencing",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "linkId": "Dosage.doseAndRate.extension",
                              "text": "Additional content defined by implementations",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.extension-flyover",
                                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                                  "type": "display"
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                },
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                  "valueString": "CodeableConcept"
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.type",
                              "text": "The kind of dose or rate specified",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.type-flyover",
                                  "text": "The kind of dose or rate specified, for example, ordered or calculated.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Dosage.doseAndRate.type.coding",
                                  "text": "code:",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly"
                                },
                                {
                                  "linkId": "Dosage.doseAndRate.type.text",
                                  "text": "text:",
                                  "type": "string",
                                  "required": false,
                                  "repeats": false
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.dose[x]",
                              "text": "Amount of medication per dose",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.dose[x]-flyover",
                                  "text": "Amount of medication per dose. Note that this specifies the quantity of the specified medication, not the quantity for each active ingredient(s). Each ingredient amount can be communicated in the Medication resource. For example, if one wants to communicate that a tablet was 375 mg, where the dose was one tablet, you can use the Medication resource to document that the tablet was comprised of 375 mg of drug XYZ. Alternatively if the dose was 375 mg, then you may only need to use the Medication resource to indicate this was a tablet. If the example were an IV such as dopamine and you wanted to communicate that 400mg of dopamine was mixed in 500 ml of some IV solution, then this would all be communicated in the Medication resource. If the administration is not intended to be instantaneous (rate is present or timing has a duration), this can be specified to convey the total amount to be administered over the period of time as indicated by the schedule e.g. 500 ml in dose, with timing used to convey that this should be done over 4 hours.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Dosage.doseAndRate.dose[x]._type",
                                  "text": "type",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly",
                                  "answerValueSet": "#vs32",
                                  "item": [
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Range"
                                        }
                                      ],
                                      "linkId": "Dosage.doseAndRate.dose[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.low",
                                          "text": "low:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.high",
                                          "text": "high:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                          "text": "units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Quantity"
                                        }
                                      ],
                                      "linkId": "Dosage.doseAndRate.dose[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.comparator",
                                          "text": "comp:",
                                          "type": "coding",
                                          "required": false,
                                          "repeats": false,
                                          "answerConstraint": "optionsOnly"
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.value",
                                          "text": "value:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.units",
                                          "text": "units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.code",
                                          "text": "coded units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.dose[x]._null.system",
                                          "text": "units system:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    }
                                  ]
                                }
                              ]
                            },
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                                  "valueInteger": 1
                                }
                              ],
                              "linkId": "Dosage.doseAndRate.rate[x]",
                              "text": "Amount of medication per unit of time",
                              "type": "group",
                              "required": false,
                              "repeats": true,
                              "item": [
                                {
                                  "extension": [
                                    {
                                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                      "valueCodeableConcept": {
                                        "coding": [
                                          {
                                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                                            "code": "flyover",
                                            "display": "Fly-over"
                                          }
                                        ]
                                      }
                                    }
                                  ],
                                  "linkId": "Dosage.doseAndRate.rate[x]-flyover",
                                  "text": "Amount of medication per unit of time. It is possible to supply both a rate and a doseQuantity to provide full details about how the medication is to be administered and supplied. If the rate is intended to change over time, depending on local rules/regulations, each change should be captured as a new version of the MedicationRequest with an updated rate, or captured with a new MedicationRequest with the new rate.\r\rIt is possible to specify a rate over time (for example, 100 ml/hour) using either the rateRatio and rateQuantity.  The rateQuantity approach requires systems to have the capability to parse UCUM grammar where ml/hour is included rather than a specific ratio where the time is specified as the denominator.  Where a rate such as 500ml over 2 hours is specified, the use of rateRatio may be more semantically correct than specifying using a rateQuantity of 250 mg/hour.",
                                  "type": "display"
                                },
                                {
                                  "linkId": "Dosage.doseAndRate.rate[x]._type",
                                  "text": "type",
                                  "type": "coding",
                                  "required": false,
                                  "repeats": false,
                                  "answerConstraint": "optionsOnly",
                                  "answerValueSet": "#vs33",
                                  "item": [
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Ratio"
                                        }
                                      ],
                                      "linkId": "Dosage.doseAndRate.rate[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.numerator",
                                          "text": "numerator:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.denominator",
                                          "text": "denominator:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                          "text": "units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Range"
                                        }
                                      ],
                                      "linkId": "Dosage.doseAndRate.rate[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.low",
                                          "text": "low:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.high",
                                          "text": "high:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                          "text": "units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    },
                                    {
                                      "extension": [
                                        {
                                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                                          "valueString": "Quantity"
                                        }
                                      ],
                                      "linkId": "Dosage.doseAndRate.rate[x]._null",
                                      "type": "group",
                                      "item": [
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.comparator",
                                          "text": "comp:",
                                          "type": "coding",
                                          "required": false,
                                          "repeats": false,
                                          "answerConstraint": "optionsOnly"
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.value",
                                          "text": "value:",
                                          "type": "decimal",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.units",
                                          "text": "units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.code",
                                          "text": "coded units:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        },
                                        {
                                          "linkId": "Dosage.doseAndRate.rate[x]._null.system",
                                          "text": "units system:",
                                          "type": "string",
                                          "required": false,
                                          "repeats": false
                                        }
                                      ]
                                    }
                                  ]
                                }
                              ]
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Ratio"
                            }
                          ],
                          "linkId": "Dosage.maxDosePerPeriod",
                          "text": "Upper limit on medication per unit of time",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.maxDosePerPeriod-flyover",
                              "text": "Upper limit on medication per unit of time. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example \"2 tablets every 4 hours to a maximum of 8/day\".",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.maxDosePerPeriod.numerator",
                              "text": "numerator:",
                              "type": "decimal",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerPeriod.denominator",
                              "text": "denominator:",
                              "type": "decimal",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerPeriod.units",
                              "text": "units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Quantity"
                            }
                          ],
                          "linkId": "Dosage.maxDosePerAdministration",
                          "text": "Upper limit on medication per administration",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.maxDosePerAdministration-flyover",
                              "text": "Upper limit on medication per administration. This is intended for use as an adjunct to the dosage when there is an upper cap.  For example, a body surface area related dose with a maximum amount, such as 1.5 mg/m2 (maximum 2 mg) IV over 5 – 10 minutes would have doseQuantity of 1.5 mg/m2 and maxDosePerAdministration of 2 mg.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.maxDosePerAdministration.comparator",
                              "text": "comp:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.maxDosePerAdministration.value",
                              "text": "value:",
                              "type": "decimal",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerAdministration.units",
                              "text": "units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerAdministration.code",
                              "text": "coded units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerAdministration.system",
                              "text": "units system:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        },
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                              "valueInteger": 1
                            },
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                              "valueString": "Quantity"
                            }
                          ],
                          "linkId": "Dosage.maxDosePerLifetime",
                          "text": "Upper limit on medication per lifetime of the patient",
                          "type": "group",
                          "required": false,
                          "repeats": true,
                          "item": [
                            {
                              "extension": [
                                {
                                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                                  "valueCodeableConcept": {
                                    "coding": [
                                      {
                                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                                        "code": "flyover",
                                        "display": "Fly-over"
                                      }
                                    ]
                                  }
                                }
                              ],
                              "linkId": "Dosage.maxDosePerLifetime-flyover",
                              "text": "Upper limit on medication per lifetime of the patient.",
                              "type": "display"
                            },
                            {
                              "linkId": "Dosage.maxDosePerLifetime.comparator",
                              "text": "comp:",
                              "type": "coding",
                              "required": false,
                              "repeats": false,
                              "answerConstraint": "optionsOnly"
                            },
                            {
                              "linkId": "Dosage.maxDosePerLifetime.value",
                              "text": "value:",
                              "type": "decimal",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerLifetime.units",
                              "text": "units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerLifetime.code",
                              "text": "coded units:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            },
                            {
                              "linkId": "Dosage.maxDosePerLifetime.system",
                              "text": "units system:",
                              "type": "string",
                              "required": false,
                              "repeats": false
                            }
                          ]
                        }
                      ]
                    },
                    {
                      "linkId": "ElementDefinition.example.value[x]._null",
                      "type": "group"
                    }
                  ]
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            }
          ],
          "linkId": "ElementDefinition.minValue[x]",
          "text": "Minimum Allowed Value (for some types)",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.minValue[x]-flyover",
              "text": "The minimum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity. Except for date/date/instant, the type of the minValue[x] SHALL be the same as the specified type of the element. For the date/dateTime/instant values, the type of minValue[x] SHALL be either the same, or a [Duration](datatypes.html#Duration) which specifies a relative time limit to the current time. The duration value is positive, and is subtracted from the current clock to determine the minimum allowable value.   A minimum value for a Quantity is interpreted as a canonical minimum - e.g. you cannot provide 100mg if the minimum value is 10g.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.minValue[x]._type",
              "text": "type",
              "type": "coding",
              "required": false,
              "repeats": false,
              "answerConstraint": "optionsOnly",
              "answerValueSet": "#vs34",
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "instant"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "time"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "time",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "decimal"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.minValue[x]._null.integer64",
                  "text": "Primitive Type integer64",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "integer64-display",
                      "text": "Typically this is used for record counters (e.g. database keys)",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "integer64-flyover",
                      "text": "A very large whole number",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "integer64.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.id-flyover",
                          "text": "unique id for the element within a resource (for internal references)",
                          "type": "display"
                        },
                        {
                          "linkId": "integer64.id.value",
                          "text": "xml:id (or equivalent in JSON)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "integer64.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.minValue[x]._null.integer64.value",
                      "text": "Primitive value for integer64",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.value-flyover",
                          "text": "The actual value",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.minValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.minValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            }
          ],
          "linkId": "ElementDefinition.maxValue[x]",
          "text": "Maximum Allowed Value (for some types)",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.maxValue[x]-flyover",
              "text": "The maximum allowed value for the element. The value is inclusive. This is allowed for the types date, dateTime, instant, time, decimal, integer, and Quantity. Except for date/date/instant, the type of the maxValue[x] SHALL be the same as the specified type of the element. For the date/dateTime/instant values, the type of maxValue[x] SHALL be either the same, or a [Duration](datatypes.html#Duration) which specifies a relative time limit to the current time. The duration value is positive, and is added to the current clock to determine the maximum allowable value.   A maximum value for a Quantity is interpreted as a canonical maximum - e.g. you cannot provide 10g if the maximum value is 50mg.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.maxValue[x]._type",
              "text": "type",
              "type": "coding",
              "required": false,
              "repeats": false,
              "answerConstraint": "optionsOnly",
              "answerValueSet": "#vs35",
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "datetime"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "instant"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "dateTime",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "time"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "time",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "decimal"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.maxValue[x]._null.integer64",
                  "text": "Primitive Type integer64",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "integer64-display",
                      "text": "Typically this is used for record counters (e.g. database keys)",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "integer64-flyover",
                      "text": "A very large whole number",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        },
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                          "valueString": "string"
                        }
                      ],
                      "linkId": "integer64.id",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.id-flyover",
                          "text": "unique id for the element within a resource (for internal references)",
                          "type": "display"
                        },
                        {
                          "linkId": "integer64.id.value",
                          "text": "xml:id (or equivalent in JSON)",
                          "type": "string",
                          "required": false,
                          "repeats": false
                        }
                      ]
                    },
                    {
                      "linkId": "integer64.extension",
                      "text": "Additional content defined by implementations",
                      "type": "group",
                      "required": false,
                      "repeats": true,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.extension-flyover",
                          "text": "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                          "type": "display"
                        }
                      ]
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                          "valueInteger": 1
                        }
                      ],
                      "linkId": "ElementDefinition.maxValue[x]._null.integer64.value",
                      "text": "Primitive value for integer64",
                      "type": "group",
                      "required": false,
                      "repeats": false,
                      "item": [
                        {
                          "extension": [
                            {
                              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                              "valueCodeableConcept": {
                                "coding": [
                                  {
                                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                                    "code": "flyover",
                                    "display": "Fly-over"
                                  }
                                ]
                              }
                            }
                          ],
                          "linkId": "integer64.value-flyover",
                          "text": "The actual value",
                          "type": "display"
                        }
                      ]
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "integer"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "type": "integer",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "Quantity"
                    }
                  ],
                  "linkId": "ElementDefinition.maxValue[x]._null",
                  "type": "group",
                  "item": [
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.comparator",
                      "text": "comp:",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOnly"
                    },
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.value",
                      "text": "value:",
                      "type": "decimal",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.units",
                      "text": "units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.code",
                      "text": "coded units:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    },
                    {
                      "linkId": "ElementDefinition.maxValue[x]._null.system",
                      "text": "units system:",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "integer"
            }
          ],
          "linkId": "ElementDefinition.maxLength",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.maxLength-flyover",
              "text": "Indicates the maximum length in characters that is permitted to be present in conformant instances and which is expected to be supported by conformant consumers that support the element. ```maxLength``` SHOULD only be used on primitive data types that have a string representation (see [http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics](http://hl7.org/fhir/extensions/StructureDefinition-structuredefinition-type-characteristics.html)). Receivers are not required to reject instances that exceed the maximum length.  The full length could be stored.  In some cases, data might be truncated, though truncation should be undertaken with care and an understanding of the consequences of doing so. If not specified, there is no conformance expectation for length support.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.maxLength.value",
              "text": "Max length for string type data",
              "type": "integer",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.condition",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.condition-flyover",
              "text": "A reference to an invariant that may make additional statements about the cardinality or value in the instance.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.condition.value",
              "text": "Reference to invariant about presence",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "linkId": "ElementDefinition.constraint",
          "text": "Condition that must evaluate to true",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "linkId": "ElementDefinition.constraint-display",
              "text": "Constraints should be declared on the \"context\" element - the lowest element in the hierarchy that is common to all nodes referenced by the constraint.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.constraint-flyover",
              "text": "Formal constraints such as co-occurrence and other constraints that can be computationally evaluated within the context of the instance.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.constraint.id",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.id-flyover",
                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.id.value",
                  "text": "Unique id for inter-element referencing",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.constraint.extension",
              "text": "Additional content defined by implementations",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.extension-flyover",
                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                  "type": "display"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.constraint.key",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.key-flyover",
                  "text": "Allows identification of which elements have their cardinalities impacted by the constraint.  Will not be referenced for constraints that do not affect cardinality.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.key.value",
                  "text": "Target of \u0027condition\u0027 reference above",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.constraint.requirements",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.requirements-flyover",
                  "text": "Description of why this constraint is necessary or appropriate. To be used if the reason for the constraint might not be intuitive to all implementers.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.requirements.value",
                  "text": "Why this constraint is necessary or appropriate",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "code"
                }
              ],
              "linkId": "ElementDefinition.constraint.severity",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.severity-flyover",
                  "text": "Identifies the impact constraint violation has on the conformance of the instance. This allows constraints to be asserted as \"shall\" (error) and \"should\" (warning).",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.severity.value",
                  "text": "severity",
                  "type": "coding",
                  "required": false,
                  "repeats": false,
                  "answerConstraint": "optionsOrType"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "boolean"
                }
              ],
              "linkId": "ElementDefinition.constraint.suppress",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.suppress-flyover",
                  "text": "If true, indicates that the warning or best practice guideline should be suppressed. This element should only be present in a derived profile where a warning or hint has been determined to be spurious/incorrect. E.g. a warning encouraging the inclusion of an element that the profile explicitly prohibits.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.suppress.value",
                  "text": "Suppress warning or hint in profile",
                  "type": "boolean",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.constraint.human",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.human-flyover",
                  "text": "Text that can be used to describe the constraint in messages identifying that the constraint has been violated. Should be expressed in business terms as much as possible.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.human.value",
                  "text": "Human description of constraint",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.constraint.expression",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.expression-flyover",
                  "text": "A [FHIRPath](fhirpath.html) expression of constraint that can be executed to see if this constraint is met. In the absense of an expression, the expression is likely not enforceable by validators, and might be missed by many systems.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.expression.value",
                  "text": "FHIRPath expression of constraint",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "uri"
                }
              ],
              "linkId": "ElementDefinition.constraint.source",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.constraint.source-flyover",
                  "text": "A reference to the original source of the constraint, for traceability purposes. This is used when, e.g. rendering, where it is not useful to present inherited constraints when rendering the snapshot.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.constraint.source.value",
                  "text": "Reference to original source of constraint",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "boolean"
            }
          ],
          "linkId": "ElementDefinition.mustHaveValue",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.mustHaveValue-flyover",
              "text": "Specifies for a primitive data type that the value of the data type cannot be replaced by an extension. Typical extensions that can be provided in place of a the value are [http://hl7.org/fhir/StructureDefinition/data-absent-reason](http://hl7.org/fhir/extensions/StructureDefinition-data-absent-reason.html),  [http://hl7.org/fhir/StructureDefinition/iso21090-nullFlavor](http://hl7.org/fhir/extensions/StructureDefinition-iso21090-nullFlavor.html),  [http://hl7.org/fhir/StructureDefinition/originalText](http://hl7.org/fhir/extensions/StructureDefinition-originalText.html), and [http://hl7.org/fhir/StructureDefinition/cqf-expression](http://hl7.org/fhir/extensions/StructureDefinition-cqf-expression.html). Note that this element has no meaning when a value is provided, and extensions can be provided in addition to a value.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.mustHaveValue.value",
              "text": "For primitives, that a value must be present - not replaced by an extension",
              "type": "boolean",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "uri"
            }
          ],
          "linkId": "ElementDefinition.valueAlternatives",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.valueAlternatives-flyover",
              "text": "Specifies a list of extensions that can appear in place of a primitive value. if mustHaveValue is true, then this element should not be present, since no extensions are allowed in place of the value. Note that this element has no impact if the value is present.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.valueAlternatives.value",
              "text": "Extensions that are allowed to replace a primitive value",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "boolean"
            }
          ],
          "linkId": "ElementDefinition.mustSupport",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.mustSupport-flyover",
              "text": "If true, implementations that produce or consume resources SHALL provide \"support\" for the element in some meaningful way. Note that this is being phased out and replaced by obligations (see below).  If false, the element may be ignored and not supported. If false, whether to populate or use the data element in any way is at the discretion of the implementation. \"Something meaningful\" is context dependent and impossible to describe in the base FHIR specification. For this reason, the mustSupport flag is never set to true by the FHIR specification itself - it is only set to true in profiles.  A profile on a type can always make mustSupport \u003d true if it is false in the base type but cannot make mustSupport \u003d false if it is true in the base type.   This is done in [Resource Profiles](profiling.html#mustsupport), where the profile labels an element as mustSupport\u003dtrue. When a profile does this, it SHALL also make clear exactly what kind of \"support\" is required, as this can mean many things.    Note that an element that has the property IsModifier is not necessarily a \"key\" element (e.g. one of the important elements to make use of the resource), nor is it automatically mustSupport - however both of these things are more likely to be true for IsModifier elements than for other elements.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.mustSupport.value",
              "text": "If the element must be supported (discouraged - see obligations)",
              "type": "boolean",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "boolean"
            }
          ],
          "linkId": "ElementDefinition.isModifier",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.isModifier-flyover",
              "text": "If true, the value of this element affects the interpretation of the element or resource that contains it, and the value of the element cannot be ignored. Typically, this is used for status, negation and qualification codes. The effect of this is that the element cannot be ignored by systems: they SHALL either recognize the element and process it, and/or a pre-determination has been made that it is not relevant to their particular system. When used on the root element in an extension definition, this indicates whether or not the extension is a modifier extension. Only the definition of an element can set IsModifier true - either the specification itself or where an extension is originally defined. Once set, it cannot be changed in derived profiles (except in the special case of the defining a new extension). An element/extension that has isModifier\u003dtrue SHOULD also have a minimum cardinality of 1, so that there is no lack of clarity about what to do if it is missing. If it can be missing, the definition SHALL make the meaning of a missing element clear.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.isModifier.value",
              "text": "If this modifies the meaning of other elements",
              "type": "boolean",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "string"
            }
          ],
          "linkId": "ElementDefinition.isModifierReason",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.isModifierReason-flyover",
              "text": "Explains how that element affects the interpretation of the resource or element that contains it.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.isModifierReason.value",
              "text": "Reason that this element is marked as a modifier",
              "type": "string",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 0
            },
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
              "valueString": "boolean"
            }
          ],
          "linkId": "ElementDefinition.isSummary",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.isSummary-flyover",
              "text": "Whether the element should be included if a client requests a search with the parameter _summary\u003dtrue. Some resources include a set of simple metadata, and some very large data. This element is used to reduce the quantity of data returned in searches. Note that servers may pre-cache summarized resources for optimal performance. When a request is made with _summary\u003dtrue, serializers only include elements marked as \u0027isSummary \u003d true\u0027. With a few exceptions (listed below), all datatype properties are included in the summary form. In resource and datatype definitions, if an element has a descendant marked as isSummary\u003dtrue or if it satisfies both of the following conditions, it must be marked as isSummary\u003dtrue:\n* is at the root or has a parent that is \u0027mustSupport\u0027\n* has a minimum cardinality of 1 or is a modifier element\n\nThe following datatype properties are exceptions, and are not marked as isSummary:\n* Attachment.data\n* Signature.data, Signature.targetFormat, Signature.sigFormat\n* Narrative.status, Narrative.div\n* SampledData.data.",
              "type": "display"
            },
            {
              "linkId": "ElementDefinition.isSummary.value",
              "text": "Include when _summary \u003d true?",
              "type": "boolean",
              "required": false,
              "repeats": false
            }
          ]
        },
        {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
              "valueInteger": 1
            }
          ],
          "linkId": "ElementDefinition.binding",
          "text": "ValueSet details if this is coded",
          "type": "group",
          "required": false,
          "repeats": false,
          "item": [
            {
              "linkId": "ElementDefinition.binding-display",
              "text": "For a CodeableConcept, when no codes are allowed - only text, use a binding of strength \"required\" with a description explaining that no coded values are allowed and what sort of information to put in the \"text\" element.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.binding-flyover",
              "text": "Binds to a value set if this element is coded (code, Coding, CodeableConcept, Quantity), or the data types (string, uri).",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.binding.id",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.binding.id-flyover",
                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.binding.id.value",
                  "text": "Unique id for inter-element referencing",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.binding.extension",
              "text": "Additional content defined by implementations",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.binding.extension-flyover",
                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                  "type": "display"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "code"
                }
              ],
              "linkId": "ElementDefinition.binding.strength",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.binding.strength-flyover",
                  "text": "Indicates the degree of conformance expectations associated with this binding - that is, the degree to which the provided value set must be adhered to in the instances. For further discussion, see [Using Terminologies](terminologies.html).",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.binding.strength.value",
                  "text": "strength",
                  "type": "coding",
                  "required": false,
                  "repeats": false,
                  "answerConstraint": "optionsOrType"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.binding.description",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.binding.description-flyover",
                  "text": "Describes the intended use of this particular set of codes.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.binding.description.value",
                  "text": "Intended use of codes in the bound value set",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "uri"
                }
              ],
              "linkId": "ElementDefinition.binding.valueSet",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.binding.valueSet-flyover",
                  "text": "Refers to the value set that identifies the set of codes the binding refers to. The reference may be version-specific or not (e.g. have a |[version] at the end of the canonical URL).",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.binding.valueSet.value",
                  "text": "Source of value set",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.binding.additional",
              "text": "Additional Bindings - more rules about the binding",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.binding.additional-flyover",
                  "text": "Additional bindings that help applications implementing this element. Additional bindings do not replace the main binding but provide more information and/or context.",
                  "type": "display"
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.binding.additional.id",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.id-flyover",
                      "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.binding.additional.id.value",
                      "text": "Unique id for inter-element referencing",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.binding.additional.extension",
                  "text": "Additional content defined by implementations",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.extension-flyover",
                      "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                      "type": "display"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "code"
                    }
                  ],
                  "linkId": "ElementDefinition.binding.additional.purpose",
                  "type": "group",
                  "required": true,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.purpose-flyover",
                      "text": "The use of this additional binding. Conformance bindings are in addition to the base binding, not instead of it.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.binding.additional.purpose.value",
                      "text": "purpose",
                      "type": "coding",
                      "required": false,
                      "repeats": false,
                      "answerConstraint": "optionsOrType"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "uri"
                    }
                  ],
                  "linkId": "ElementDefinition.binding.additional.valueSet",
                  "type": "group",
                  "required": true,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.valueSet-flyover",
                      "text": "The valueSet that is being bound for the purpose.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.binding.additional.valueSet.value",
                      "text": "The value set for the additional binding",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.binding.additional.documentation",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.documentation-flyover",
                      "text": "Documentation of the purpose of use of the bindingproviding additional information about how it is intended to be used.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.binding.additional.documentation.value",
                      "text": "Documentation of the purpose of use of the binding",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "string"
                    }
                  ],
                  "linkId": "ElementDefinition.binding.additional.shortDoco",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.shortDoco-flyover",
                      "text": "Concise documentation - for summary tables.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.binding.additional.shortDoco.value",
                      "text": "Concise documentation - for summary tables",
                      "type": "string",
                      "required": false,
                      "repeats": false
                    }
                  ]
                },
                {
                  "linkId": "ElementDefinition.binding.additional.usage",
                  "text": "Qualifies the usage - jurisdiction, gender, workflow status etc.",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "linkId": "ElementDefinition.binding.additional.usage-display",
                      "text": "This specification does not define exactly how the context is determined for the usage; typically, this will be described in implementation guides.",
                      "type": "display"
                    },
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.usage-flyover",
                      "text": "Qualifies the usage of the binding. Typically bindings are qualified by jurisdiction, but they may also be qualified by gender, workflow status, clinical domain etc. The information to decide whether a usege context applies is usually outside the resource, determined by context, and this might present challenges for validation tooling.",
                      "type": "display"
                    }
                  ]
                },
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                      "valueInteger": 1
                    },
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                      "valueString": "boolean"
                    }
                  ],
                  "linkId": "ElementDefinition.binding.additional.any",
                  "type": "group",
                  "required": false,
                  "repeats": true,
                  "item": [
                    {
                      "extension": [
                        {
                          "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                          "valueCodeableConcept": {
                            "coding": [
                              {
                                "system": "http://hl7.org/fhir/questionnaire-item-control",
                                "code": "flyover",
                                "display": "Fly-over"
                              }
                            ]
                          }
                        }
                      ],
                      "linkId": "ElementDefinition.binding.additional.any-flyover",
                      "text": "Whether the binding applies to all repeats, or just to any one of them. This is only relevant for elements that can repeat. A common pattern is to make a conformance binding to all repeats, and then make a binding that one of the repeats must conform to.",
                      "type": "display"
                    },
                    {
                      "linkId": "ElementDefinition.binding.additional.any.value",
                      "text": "Whether binding can applies to all repeats, or just one",
                      "type": "boolean",
                      "required": false,
                      "repeats": false
                    }
                  ]
                }
              ]
            }
          ]
        },
        {
          "linkId": "ElementDefinition.mapping",
          "text": "Map element to another set of definitions",
          "type": "group",
          "required": false,
          "repeats": true,
          "item": [
            {
              "linkId": "ElementDefinition.mapping-display",
              "text": "Mappings are not necessarily specific enough for safe translation.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                  "valueCodeableConcept": {
                    "coding": [
                      {
                        "system": "http://hl7.org/fhir/questionnaire-item-control",
                        "code": "flyover",
                        "display": "Fly-over"
                      }
                    ]
                  }
                }
              ],
              "linkId": "ElementDefinition.mapping-flyover",
              "text": "Identifies a concept from an external specification that roughly corresponds to this element.",
              "type": "display"
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.mapping.id",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.mapping.id-flyover",
                  "text": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.mapping.id.value",
                  "text": "Unique id for inter-element referencing",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "linkId": "ElementDefinition.mapping.extension",
              "text": "Additional content defined by implementations",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.mapping.extension-flyover",
                  "text": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
                  "type": "display"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.mapping.identity",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.mapping.identity-flyover",
                  "text": "An internal reference to the definition of a mapping.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.mapping.identity.value",
                  "text": "Reference to mapping declaration",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "code"
                }
              ],
              "linkId": "ElementDefinition.mapping.language",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.mapping.language-flyover",
                  "text": "Identifies the computable language in which mapping.map is expressed. If omitted, then there can be no expectation of computational interpretation of the mapping.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.mapping.language.value",
                  "text": "language",
                  "type": "coding",
                  "required": false,
                  "repeats": false,
                  "answerConstraint": "optionsOrType"
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-minOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.mapping.map",
              "type": "group",
              "required": true,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.mapping.map-flyover",
                  "text": "Expresses what part of the target specification corresponds to this element. For most mappings, the syntax is undefined.  Syntax will be provided for mappings to the RIM.  Multiple mappings may be possible and may include constraints on other resource elements that identify when a particular mapping applies.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.mapping.map.value",
                  "text": "Details of the mapping",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            },
            {
              "extension": [
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-maxOccurs",
                  "valueInteger": 1
                },
                {
                  "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-fhirType",
                  "valueString": "string"
                }
              ],
              "linkId": "ElementDefinition.mapping.comment",
              "type": "group",
              "required": false,
              "repeats": true,
              "item": [
                {
                  "extension": [
                    {
                      "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
                      "valueCodeableConcept": {
                        "coding": [
                          {
                            "system": "http://hl7.org/fhir/questionnaire-item-control",
                            "code": "flyover",
                            "display": "Fly-over"
                          }
                        ]
                      }
                    }
                  ],
                  "linkId": "ElementDefinition.mapping.comment-flyover",
                  "text": "Comments that provide information about the mapping or its use.",
                  "type": "display"
                },
                {
                  "linkId": "ElementDefinition.mapping.comment.value",
                  "text": "Comments about the mapping or its use",
                  "type": "string",
                  "required": false,
                  "repeats": false
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}