description: The date/period by which the item that is pre-authorized must be completed. package_name: hl7.fhir.us.davinci-pas derivation: constraint name: ItemAuthorizedDate type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-pas/StructureDefinition/extension-itemAuthorizedDate'} index: 1 value: choices: [valueDateTime, valuePeriod] index: 3 valueDateTime: {type: dateTime, choiceOf: value, index: 4} valuePeriod: {type: Period, choiceOf: value, index: 5} package_version: 1.2.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/us/davinci-pas/StructureDefinition/extension-itemAuthorizedDate base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.2.0-ballot