This code system http://hl7.org/fhir/cited-artifact-abstract-type defines the following codes:

CodeDisplayDefinition
primary-human-use Primary human useHuman-friendly main or official abstract
primary-machine-use Primary machine useMachine-friendly main or official abstract
truncated TruncatedTruncated abstract
short-abstract Short abstractBrief abstract, for use when abstracts are provided in different sizes or lengths
long-abstract Long abstractLong version of the abstract, for use when abstracts are provided in different sizes or lengths
plain-language Plain languageAdditional form of abstract written for the general public
different-publisher Different publisher for abstractAbstract produced by a different publisher than the cited artifact
language Different languageAdditional form of abstract in a different language
autotranslated Different language derived from autotranslationMachine translated form of abstract in a different language, language element codes the language into which it was translated by machine
duplicate-pmid Different text in additional Medline entryAlternative form of abstract in two or more Medline entries
earlier-abstract Different text in an earlier versionAlternative form of abstract in an earlier version such as epub ahead of print
<status value="active"/><experimental value="false"/><date value="2020-12-28T16:55:11+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="Used to express the reason and specific aspect for the variant abstract, such as language and specific language"/><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/cited-artifact-abstract-type"/><content value="complete"/><concept><code value="primary-human-use"/><display value="Primary human use"/><definition value="Human-friendly main or official abstract"/></concept><concept><code value="primary-machine-use"/><display value="Primary machine use"/><definition value="Machine-friendly main or official abstract"/></concept><concept><code value="truncated"/><display value="Truncated"/><definition value="Truncated abstract"/></concept><concept><code value="short-abstract"/><display value="Short abstract"/><definition value="Brief abstract, for use when abstracts are provided in different sizes or lengths"/></concept><concept><code value="long-abstract"/><display value="Long abstract"/><definition value="Long version of the abstract, for use when abstracts are provided in different sizes or lengths"/></concept><concept><code value="plain-language"/><display value="Plain language"/><definition value="Additional form of abstract written for the general public"/></concept><concept><code value="different-publisher"/><display value="Different publisher for abstract"/><definition value="Abstract produced by a different publisher than the cited artifact"/></concept><concept><code value="language"/><display value="Different language"/><definition value="Additional form of abstract in a different language"/></concept><concept><code value="autotranslated"/><display value="Different language derived from autotranslation"/><definition value="Machine translated form of abstract in a different language, language element codes the language into which it was translated by machine"/></concept><concept><code value="duplicate-pmid"/><display value="Different text in additional Medline entry"/><definition value="Alternative form of abstract in two or more Medline entries"/></concept><concept><code value="earlier-abstract"/><display value="Different text in an earlier version"/><definition value="Alternative form of abstract in an earlier version such as epub ahead of print"/></concept></CodeSystem>