description: Risk of harmful or undesirable, physiological response which is unique to an individual and associated with exposure to a substance.
package_name: hl7.fhir.core
derivation: specialization
name: AllergyIntolerance
type: AllergyIntolerance
elements:
  patient:
    short: Who the sensitivity is for
    refers: ['http://hl7.org/fhir/StructureDefinition/Patient']
    type: Reference
    isSummary: true
    index: 7
  onset:
    short: When allergy or intolerance was identified
    choices: [onsetDateTime, onsetAge, onsetPeriod, onsetRange, onsetString]
    index: 9
  category: {short: food | medication | environment | biologic, type: code, array: true, isSummary: true, index: 4}
  criticality: {short: low | high | unable-to-assess, type: code, isSummary: true, index: 5}
  clinicalStatus: {isModifier: true, short: active | inactive | resolved, type: code, isSummary: true, index: 1}
  onsetRange: {short: When allergy or intolerance was identified, type: Range, choiceOf: onset, index: 13}
  onsetAge: {short: When allergy or intolerance was identified, type: Age, choiceOf: onset, index: 11}
  onsetPeriod: {short: When allergy or intolerance was identified, type: Period, choiceOf: onset, index: 12}
  type: {short: allergy | intolerance - Underlying mechanism (if known), type: code, isSummary: true, index: 3}
  asserter:
    short: Source of the information about the allergy
    refers: ['http://hl7.org/fhir/StructureDefinition/Patient', 'http://hl7.org/fhir/StructureDefinition/Practitioner', 'http://hl7.org/fhir/StructureDefinition/RelatedPerson']
    type: Reference
    isSummary: true
    index: 17
  note: {short: Additional text not captured in other fields, type: Annotation, array: true, index: 19}
  assertedDate: {short: Date record was believed accurate, type: dateTime, index: 15}
  onsetString: {short: When allergy or intolerance was identified, type: string, choiceOf: onset, index: 14}
  recorder:
    short: Who recorded the sensitivity
    refers: ['http://hl7.org/fhir/StructureDefinition/Patient', 'http://hl7.org/fhir/StructureDefinition/Practitioner', 'http://hl7.org/fhir/StructureDefinition/RelatedPerson']
    type: Reference
    index: 16
  code: {short: Code that identifies the allergy or intolerance, type: CodeableConcept, isSummary: true, index: 6}
  identifier: {short: External ids for this item, type: Identifier, array: true, isSummary: true, index: 0}
  onsetDateTime: {short: When allergy or intolerance was identified, type: dateTime, choiceOf: onset, index: 10}
  lastOccurrence: {short: Date(/time) of last known occurrence of a reaction, type: dateTime, index: 18}
  verificationStatus: {isModifier: true, short: unconfirmed | confirmed | refuted | entered-in-error, type: code, isSummary: true, index: 2}
  reaction:
    type: BackboneElement
    short: Adverse Reaction Events linked to exposure to substance
    array: true
    index: 20
    elements:
      substance: {short: Specific substance or pharmaceutical product considered to be responsible for event, type: CodeableConcept, index: 21}
      manifestation: {min: 1, short: Clinical symptoms/signs associated with the Event, type: CodeableConcept, array: true, index: 22}
      description: {short: Description of the event as a whole, type: string, index: 23}
      onset: {type: dateTime, short: Date(/time) when manifestations showed, index: 24}
      severity: {short: mild | moderate | severe (of event as a whole), type: code, index: 25}
      exposureRoute: {short: How the subject was exposed to the substance, type: CodeableConcept, index: 26}
      note: {short: Text about event not captured in other fields, type: Annotation, array: true, index: 27}
    required: [manifestation]
package_version: 3.2.0
class: resource
kind: resource
url: http://hl7.org/fhir/StructureDefinition/AllergyIntolerance
base: http://hl7.org/fhir/StructureDefinition/DomainResource
version: null
required: [patient]