description: null package_name: gdrl.fhir.r4 derivation: constraint name: ReteLabSpecimenIdPrelievo type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.siss.regione.lombardia.it/StructureDefinition/ReteLabSpecimenIdPrelievo'} index: 0 value: choices: [valueUnsignedInt] index: 2 valueUnsignedInt: {type: unsignedInt, choiceOf: value, index: 3} package_version: 1.2.0-----beta class: extension kind: complex-type url: https://fhir.siss.regione.lombardia.it/StructureDefinition/ReteLabSpecimenIdPrelievo base: http://hl7.org/fhir/StructureDefinition/Extension version: null