description: identifies if possible to substitute medication. package_name: sfm.030521 derivation: constraint name: SfmSubstitute type: Extension elements: url: pattern: {type: Uri, value: 'http://ehelse.no/fhir/StructureDefinition/sfm-substitute'} index: 0 value: choices: [valueBoolean] index: 2 valueBoolean: {type: boolean, choiceOf: value, index: 3} package_version: 1.0.1 class: extension kind: complex-type url: http://ehelse.no/fhir/StructureDefinition/sfm-substitute base: http://hl7.org/fhir/StructureDefinition/Extension version: '1.0'