description: A code specifying the type of probability distribution for the uncertainty. package_name: hl7.fhir.uv.extensions.r3 derivation: constraint name: UncertaintyType type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType'} index: 1 value: choices: [valueCode] index: 3 valueCode: {type: code, choiceOf: value, index: 4} package_version: 5.2.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/iso21090-uncertaintyType base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.2.0 required: [valueCode, value]