## Union of http://hl7.org/fhir/us/core/StructureDefinition/us-core-allergyintolerance and http://hl7.org/fhir/us/core/StructureDefinition/us-core-allergyintolerance

This is the set of resources that conform to either of the profiles US Core AllergyIntolerance Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-allergyintolerance) and US Core AllergyIntolerance Profile (http://hl7.org/fhir/us/core/StructureDefinition/us-core-allergyintolerance). E.g. what you have to deal with if you get resources conforming to one of them

### Structure

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
AllergyIntolerance | C | 0..* |  | Allergy or Intolerance (generally: Risk of adverse reaction to a substance) Constraints: ait-1, ait-2
meta | Σ | 0..1 | Meta | Metadata about the resource
implicitRules | ?!Σ | 0..1 | uri | A set of rules under which this content was created
language |  | 0..1 | code | Language of the resource content Binding: ?? (preferred): A human language.
text |  | 0..1 | Narrative | Text summary of the resource, for human interpretation This profile does not constrain the narrative in regard to content, language, or traceability to data elements
contained |  | 0..* | Resource | Contained, inline Resources
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?! | 0..* | Extension | Extensions that cannot be ignored
identifier | Σ | 0..* | Identifier | External ids for this item
clinicalStatus | ?!S Σ | 0..1 | CodeableConcept | left: (USCDI) active | inactive | resolved; right: active | inactive | resolved Binding: ?? (required)
verificationStatus | ?!S Σ | 0..1 | CodeableConcept | left: (USCDI) unconfirmed | confirmed | refuted | entered-in-error; right: unconfirmed | confirmed | refuted | entered-in-error Binding: ?? (required)
type | Σ | 0..1 | code | allergy | intolerance - Underlying mechanism (if known) Binding: ?? (required): Identification of the underlying physiological mechanism for a Reaction Risk.
category | Σ | 0..* | code | food | medication | environment | biologic Binding: ?? (required): Category of an identified substance associated with allergies or intolerances.
criticality | Σ | 0..1 | code | low | high | unable-to-assess Binding: ?? (required): Estimate of the potential clinical harm, or seriousness, of a reaction to an identified substance.
code | S Σ | 1..1 | CodeableConcept | left: (USCDI) Code that identifies the allergy or intolerance; right: Code that identifies the allergy or intolerance Binding: ?? (extensible)
patient | S Σ | 1..1 | Reference(US Core Patient Profile | #sd+325-us-core-patient-us-core-patient) | left: (USCDI) Who the sensitivity is for; right: Who the sensitivity is for
encounter |  | 0..1 | Reference(Encounter) | Encounter when the allergy or intolerance was asserted
onset[x] |  | 0..1 |  | When allergy or intolerance was identified
onsetDateTime |  |  | dateTime |
onsetAge |  |  | Age |
onsetPeriod |  |  | Period |
onsetRange |  |  | Range |
onsetString |  |  | string |
recordedDate |  | 0..1 | dateTime | Date first version of the resource instance was recorded
recorder |  | 0..1 | Reference(Practitioner | PractitionerRole | Patient | RelatedPerson) | left: Who recorded the sensitivity; right: 𝗔𝗗𝗗𝗜𝗧𝗜𝗢𝗡𝗔𝗟 𝗨𝗦𝗖𝗗𝗜: Who recorded the sensitivity
asserter | Σ | 0..1 | Reference(Patient | RelatedPerson | Practitioner | PractitionerRole) | Source of the information about the allergy
lastOccurrence |  | 0..1 | dateTime | Date(/time) of last known occurrence of a reaction
note |  | 0..* | Annotation | Additional text not captured in other fields
reaction | S | 0..* | BackboneElement | left: (USCDI) Adverse Reaction Events linked to exposure to substance; right: Adverse Reaction Events linked to exposure to substance
extension |  | 0..* | Extension | Additional content defined by implementations
modifierExtension | ?!Σ | 0..* | Extension | Extensions that cannot be ignored even if unrecognized
substance |  | 0..1 | CodeableConcept | Specific substance or pharmaceutical product considered to be responsible for event Binding: ?? (example): Codes defining the type of the substance (including pharmaceutical products).
manifestation | S | 1..* | CodeableConcept | left: (USCDI) Clinical symptoms/signs associated with the Event; right: Clinical symptoms/signs associated with the Event Binding: ?? (extensible)
description |  | 0..1 | string | Description of the event as a whole
onset |  | 0..1 | dateTime | Date(/time) when manifestations showed
severity |  | 0..1 | code | mild | moderate | severe (of event as a whole) Binding: ?? (required): Clinical assessment of the severity of a reaction event as a whole, potentially considering multiple different manifestations.
exposureRoute |  | 0..1 | CodeableConcept | How the subject was exposed to the substance Binding: ?? (example): A coded concept describing the route or physiological path of administration of a therapeutic agent into or onto the body of a subject.
note |  | 0..* | Annotation | Text about event not captured in other fields
Documentation for this format