description: Specifies the publication date of the referenced artifacts. package_name: hl7.fhir.us.cqfmeasures derivation: constraint name: PublicationDate type: Extension elements: url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-publicationDate'} index: 0 value: choices: [valueDate] index: 2 valueDate: {type: date, choiceOf: value, index: 3} package_version: 2.0.0 class: extension kind: complex-type url: http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-publicationDate base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.0.0