description: Risk of harmful or undesirable, physiological response which is unique to an individual and associated with exposure to a substance. package_name: ca.on.ehr.r4 derivation: constraint name: AllergyIntoleranceEHR type: AllergyIntolerance elements: patient: type: Reference mustSupport: true refers: ['http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-patient'] index: 4 elements: reference: {mustSupport: true, index: 5} required: [reference] onset: mustSupport: true choices: [onsetString] index: 14 slicing: slices: onsetString: match: {} schema: mustSupport: true choices: [onsetString] index: 14 min: 0 max: 1 category: {mustSupport: true, index: 2} encounter: type: Reference mustSupport: true refers: ['http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-encounter'] index: 6 elements: reference: {mustSupport: true, index: 7} required: [reference] extension: index: 0 slicing: rules: open ordered: false discriminator: - {path: url, type: value} min: null slices: ext-abatement-datetime: match: {url: null} schema: {type: Extension, url: 'http://hl7.org/fhir/StructureDefinition/allergyintolerance-abatement', index: 1} min: 0 max: 1 recordedDate: {mustSupport: true, index: 16} onsetString: type: string mustSupport: true choiceOf: onset index: 15 slicing: slices: onsetString: match: {} schema: {type: string, mustSupport: true, choiceOf: onset, index: 15} min: 0 max: 1 recorder: type: Reference mustSupport: true refers: ['http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-patient', 'http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-practitioner', 'http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-practitionerRole'] index: 17 code: type: CodeableConcept binding: {strength: preferred, valueSet: 'https://fhir.infoway-inforoute.ca/ValueSet/pharmaceuticalbiologicproductandsubstancecode'} mustSupport: true index: 3 onsetDateTime: type: dateTime mustSupport: true choiceOf: onset index: 12 slicing: slices: onsetDateTime: match: {} schema: {type: dateTime, mustSupport: true, choiceOf: onset, index: 12} min: 0 max: 1 lastOccurrence: {mustSupport: true, index: 18} reaction: mustSupport: true index: 19 elements: manifestation: type: CodeableConcept binding: {strength: preferred, valueSet: 'https://fhir.infoway-inforoute.ca/ValueSet/clinicalfindingcode'} mustSupport: true index: 20 severity: {mustSupport: true, index: 21} package_version: 1.0.0-snapshot2 extensions: ext-abatement-datetime: {url: 'http://hl7.org/fhir/StructureDefinition/allergyintolerance-abatement', min: 0, max: 1, type: Extension, index: 1} class: profile kind: resource url: http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-allergyIntolerance base: http://hl7.org/fhir/StructureDefinition/AllergyIntolerance version: 1.0.0 required: [code]