description: Extension asking if information about chronic diseases was collected package_name: de.nfdi4health.mds derivation: constraint name: NFDI4Health_EX_MDS_Chronic_Diseases type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://www.nfdi4health.de/fhir/metadataschema/StructureDefinition/nfdi4health-ex-mds-chronic-diseases'} index: 1 value: choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, choiceOf: value, index: 4} package_version: 2.0.0 extensions: {} class: extension kind: complex-type url: https://www.nfdi4health.de/fhir/metadataschema/StructureDefinition/nfdi4health-ex-mds-chronic-diseases base: http://hl7.org/fhir/StructureDefinition/Extension version: '0.9' required: [value, valueBoolean]