description: Extension to indicate a CS with non unique concept codes package_name: nit-mvp.nit derivation: constraint name: extension-codeSystem-hasNonUniqueConceptCodes type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://pnt.agenas.it/fhir/StructureDefinition/extension-codeSystem-hasNonUniqueConceptCodes'} index: 1 value: choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, choiceOf: value, index: 4} package_version: 0.0.1 extensions: {} class: extension kind: complex-type url: https://pnt.agenas.it/fhir/StructureDefinition/extension-codeSystem-hasNonUniqueConceptCodes base: http://hl7.org/fhir/StructureDefinition/Extension version: null