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.r5.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: 10
  category:
    short: food | medication | environment | biologic
    type: code
    array: true
    binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/allergy-intolerance-category|4.4.0'}
    isSummary: true
    index: 4
  criticality:
    short: low | high | unable-to-assess
    type: code
    binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/allergy-intolerance-criticality|4.4.0'}
    isSummary: true
    index: 5
  clinicalStatus:
    isModifier: true
    short: active | inactive | resolved
    type: CodeableConcept
    binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/allergyintolerance-clinical|4.4.0'}
    isModifierReason: This element is labeled as a modifier because the status contains the codes inactive and resolved that mark the AllergyIntolerance as no longer active.
    isSummary: true
    index: 1
  onsetRange: {short: When allergy or intolerance was identified, type: Range, choiceOf: onset, index: 14}
  onsetAge: {short: When allergy or intolerance was identified, type: Age, choiceOf: onset, index: 12}
  encounter:
    short: Encounter when the allergy or intolerance was asserted
    refers: ['http://hl7.org/fhir/StructureDefinition/Encounter']
    type: Reference
    index: 8
  onsetPeriod: {short: When allergy or intolerance was identified, type: Period, choiceOf: onset, index: 13}
  type:
    short: allergy | intolerance - Underlying mechanism (if known)
    type: code
    binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/allergy-intolerance-type|4.4.0'}
    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/PractitionerRole', 'http://hl7.org/fhir/StructureDefinition/RelatedPerson']
    type: Reference
    isSummary: true
    index: 18
  note: {short: Additional text not captured in other fields, type: Annotation, array: true, index: 20}
  recordedDate: {type: dateTime, short: Date first version of the resource instance was recorded, index: 16}
  onsetString: {short: When allergy or intolerance was identified, type: string, choiceOf: onset, index: 15}
  recorder:
    short: Who recorded the sensitivity
    refers: ['http://hl7.org/fhir/StructureDefinition/Patient', 'http://hl7.org/fhir/StructureDefinition/Practitioner', 'http://hl7.org/fhir/StructureDefinition/PractitionerRole', 'http://hl7.org/fhir/StructureDefinition/RelatedPerson']
    type: Reference
    index: 17
  code:
    short: Code that identifies the allergy or intolerance
    type: CodeableConcept
    binding: {strength: example, valueSet: 'http://hl7.org/fhir/ValueSet/allergyintolerance-code'}
    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: 11}
  lastOccurrence: {short: Date(/time) of last known occurrence of a reaction, type: dateTime, index: 19}
  verificationStatus:
    isModifier: true
    short: unconfirmed | presumed | confirmed | refuted | entered-in-error
    type: CodeableConcept
    binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/allergyintolerance-verification|4.4.0'}
    isModifierReason: This element is labeled as a modifier because the status contains the codes refuted and entered-in-error that mark the AllergyIntolerance as not currently valid.
    isSummary: true
    index: 2
  reaction:
    type: BackboneElement
    short: Adverse Reaction Events linked to exposure to substance
    array: true
    index: 21
    elements:
      substance:
        short: Specific substance or pharmaceutical product considered to be responsible for event
        type: CodeableConcept
        binding: {strength: example, valueSet: 'http://hl7.org/fhir/ValueSet/substance-code'}
        index: 22
      manifestation:
        min: 1
        short: Clinical symptoms/signs associated with the Event
        type: CodeableConcept
        array: true
        binding: {strength: example, valueSet: 'http://hl7.org/fhir/ValueSet/clinical-findings'}
        index: 23
      description: {short: Description of the event as a whole, type: string, index: 24}
      onset: {type: dateTime, short: Date(/time) when manifestations showed, index: 25}
      severity:
        short: mild | moderate | severe (of event as a whole)
        type: code
        binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/reaction-event-severity|4.4.0'}
        index: 26
      exposureRoute:
        short: How the subject was exposed to the substance
        type: CodeableConcept
        binding: {strength: example, valueSet: 'http://hl7.org/fhir/ValueSet/route-codes'}
        index: 27
      note: {short: Text about event not captured in other fields, type: Annotation, array: true, index: 28}
    required: [manifestation]
package_version: 4.4.0
class: resource
kind: resource
url: http://hl7.org/fhir/StructureDefinition/AllergyIntolerance
base: http://hl7.org/fhir/StructureDefinition/DomainResource
version: 4.4.0
required: [patient]