description: null package_name: gdrl.fhir.r4 derivation: constraint name: ReteLabPatientTitoloDiStudio type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.siss.regione.lombardia.it/StructureDefinition/ReteLabPatientTitoloDiStudio'} index: 0 value: choices: [valueCodeableConcept] index: 2 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 3} package_version: 1.3.1 class: extension kind: complex-type url: https://fhir.siss.regione.lombardia.it/StructureDefinition/ReteLabPatientTitoloDiStudio base: http://hl7.org/fhir/StructureDefinition/Extension version: null