description: null package_name: fhir.trustedhealthapps.org derivation: constraint name: HealthAppModulePrescriptionUnitLink type: Extension elements: url: pattern: {type: uri, value: 'https://fhir.trustedhealthapps.org/StructureDefinition/HealthAppModulePrescriptionUnitLink'} type: uri index: 0 value: choices: [valueReference] index: 2 valueReference: type: Reference choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/ChargeItemDefinition'] index: 3 package_version: 1.0.1 class: extension kind: complex-type url: https://fhir.trustedhealthapps.org/StructureDefinition/HealthAppModulePrescriptionUnitLink base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0