description: This extension should be used in the Task ressource. It shows the presciption expiry date. package_name: de.gematik.erezept-workflow.r4 derivation: constraint name: GEM_ERP_EX_ExpiryDate type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://gematik.de/fhir/erp/StructureDefinition/GEM_ERP_EX_ExpiryDate'} index: 1 value: choices: [valueDate] index: 3 valueDate: {type: date, choiceOf: value, index: 4} package_version: 1.2.2 extensions: {} class: extension kind: complex-type url: https://gematik.de/fhir/erp/StructureDefinition/GEM_ERP_EX_ExpiryDate base: http://hl7.org/fhir/StructureDefinition/Extension version: '1.2'