description: Histologie der Tumorerkrankung package_name: de.basisprofil.onkologie derivation: constraint name: Histology type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://fhir.de/onkologie/StructureDefinition/Histology'} index: 1 value: choices: [valueCodeableConcept] index: 3 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4} package_version: 1.0.0-ballot extensions: {} class: extension kind: complex-type url: http://fhir.de/onkologie/StructureDefinition/Histology base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-ballot