description: Indicates a date on which this identifier value was deemed to apply to this instance. package_name: hl7.fhir.r3.core derivation: constraint name: validDate type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/identifier-validDate'} index: 1 valueDateTime: {type: dateTime, index: 2} package_version: 3.0.2 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/identifier-validDate base: http://hl7.org/fhir/StructureDefinition/Extension version: null