description: This profile sets minimum expectations for an AllergyIntolerance resource to record, search, and fetch allergies/adverse reactions associated with a patient. It is based on the [AU Base Allergy Intolerance](http://build.fhir.org/ig/hl7au/au-fhir-base/StructureDefinition-au-allergyintolerance.html) profile and identifies the *additional* mandatory core elements, extensions, vocabularies and value sets that **SHALL** be present in the AllergyIntolerance resource when conforming to this profile. It provides the floor for standards development for specific uses cases in an Australian context. package_name: hl7.fhir.au.core derivation: constraint name: AUCoreAllergyIntolerance type: AllergyIntolerance elements: patient: type: Reference mustSupport: true refers: ['http://hl7.org.au/fhir/core/StructureDefinition/au-core-patient'] index: 3 onset: mustSupport: true choices: [onsetDateTime, onsetAge, onsetPeriod, onsetRange] index: 5 clinicalStatus: {mustSupport: true, index: 0} onsetRange: {type: Range, mustSupport: true, choiceOf: onset, index: 9} onsetAge: {type: Age, mustSupport: true, choiceOf: onset, index: 7} onsetPeriod: {type: Period, mustSupport: true, choiceOf: onset, index: 8} code: binding: {strength: extensible, valueSet: 'https://healthterminologies.gov.au/fhir/ValueSet/indicator-hypersensitivity-intolerance-to-substance-2'} mustSupport: true index: 2 onsetDateTime: {type: dateTime, mustSupport: true, choiceOf: onset, index: 6} verificationStatus: {mustSupport: true, index: 1} reaction: mustSupport: true index: 10 elements: manifestation: {mustSupport: true, index: 11} severity: {mustSupport: true, index: 12} package_version: 1.0.0-ballot class: profile kind: resource url: http://hl7.org.au/fhir/core/StructureDefinition/au-core-allergyintolerance base: http://hl7.org.au/fhir/StructureDefinition/au-allergyintolerance version: 1.0.0-ballot required: [code]