description: This Extension profile represents the date filed by registrar. package_name: hl7.fhir.us.bfdr.r4b derivation: constraint name: ExtensionDateFiledByRegistrar type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/bfdr/StructureDefinition/Extension-date-filed-by-registrar'} index: 0 value: choices: [valueDateTime] index: 2 valueDateTime: {type: dateTime, choiceOf: value, index: 3} package_version: 1.1.0 class: extension kind: complex-type url: http://hl7.org/fhir/us/bfdr/StructureDefinition/Extension-date-filed-by-registrar base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.1.0 required: [valueDateTime, value]