description: An extension to provide the hypersensitivity or intolerance underlying the reaction. package_name: nictiz.fhir.nl.r4.cio derivation: constraint name: ExtReactionRelationHypersensitivityIntolerance type: Extension elements: url: pattern: {type: Uri, value: 'http://nictiz.nl/fhir/StructureDefinition/ext-Reaction.RelationHypersensitivityIntolerance'} index: 0 value: short: RelationHypersensitivityIntolerance choices: [valueReference] index: 2 valueReference: type: Reference short: RelationHypersensitivityIntolerance choiceOf: value refers: ['http://nictiz.nl/fhir/StructureDefinition/cio-HypersensitivityIntolerance'] index: 3 package_version: 1.0.0-beta.5 class: extension kind: complex-type url: http://nictiz.nl/fhir/StructureDefinition/ext-Reaction.RelationHypersensitivityIntolerance base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-beta.5