This code system http://hl7.org/fhir/substance-grade defines the following codes:

Code Display
USP-NF USP/NF United States Pharmacopeia (USP) and the National Formulary (NF)
Ph.Eur European Pharmacopoeia
JP Japanese Pharmacopoeia
BP British Pharmacopoeia
CompanyStandard Company Standard
<status value="active"/> <experimental value="false"/> <date value="2021-01-05T10:01:24+11:00"/> <publisher value="HL7 (FHIR Project)"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> <telecom> <system value="email"/> <value value="fhir@lists.hl7.org"/> </telecom> </contact> <description value="SubstanceGrade"/> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> <code value="001"/> <display value="World"/> </coding> </jurisdiction> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/substance-grade"/> <content value="complete"/> <concept> <code value="USP-NF"/> <display value="USP/NF United States Pharmacopeia (USP) and the National Formulary (NF)"/> </concept> <concept> <code value="Ph.Eur"/> <display value="European Pharmacopoeia"/> </concept> <concept> <code value="JP"/> <display value="Japanese Pharmacopoeia"/> </concept> <concept> <code value="BP"/> <display value="British Pharmacopoeia"/> </concept> <concept> <code value="CompanyStandard"/> <display value="Company Standard"/> </concept> </CodeSystem>