description: An extension to provide a textual description of the type of medication (including relevant properties of the composition and preparation method if possible), which is only used if no coded indication from the G Standard is available (historical data regarding magistral preparation which has been entered as free text instead of entering the substance codes). package_name: healthdata.be.r4.cbb derivation: constraint name: ExtPharmaceuticalProductDescription type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.healthdata.be/StructureDefinition/ext-PharmaceuticalProduct.Description'} index: 0 value: short: Description choices: [valueString] index: 2 valueString: {type: string, short: Description, choiceOf: value, index: 3} package_version: 0.9.0-alpha class: extension kind: complex-type url: https://fhir.healthdata.be/StructureDefinition/ext-PharmaceuticalProduct.Description base: http://hl7.org/fhir/StructureDefinition/Extension version: null