description: The date on which the asset content was approved by the publisher. Approval happens once when the content is officially approved for usage. package_name: hl7.fhir.core derivation: constraint name: approvalDate type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/resource-approvalDate'} index: 1 valueDate: {type: date, index: 2} package_version: 3.2.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/resource-approvalDate base: http://hl7.org/fhir/StructureDefinition/Extension version: null