http://hl7.org/fhir/StructureDefinition/composition-clinicaldocument-versionNumber|5.2.0

Version specific identifier for the composition, assigned when each version is created/updated. Note: this extension is deprecated because since R5 Composition has a version element which should be used instead.
element_idtypes
Extension
Extension.extension
Extension.url
Extension.value[x]
Extension
Extension.id
Extension.extension
Extension.url
Extension.value[x]