# US Quality Core AllergyIntolerance - 2026 US Quality Core Implementation Guide v0.5.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **US Quality Core AllergyIntolerance**

## Resource Profile: US Quality Core AllergyIntolerance 

| | |
| :--- | :--- |
| *Official URL*:http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-allergyintolerance | *Version*:0.5.0 |
| Active as of 2026-05-15 | *Computable Name*:USQualityCoreAllergyIntolerance |

 
Profile of AllergyIntolerance for decision support/quality metrics. Defines the core set of elements and extensions for quality rule and measure authors. 

**Usage**

See the
[patterns](patterns.md)page for implementation and usage patterns.
```
define "Statin Allergy Intolerance":
  ["AllergyIntolerance": "Statin Allergen"] StatinAllergyIntolerance
    where StatinAllergyIntolerance.clinicalStatus ~ "allergy-active"

```

This example represents a situation where the subject is currently experiencing, or is at risk of, a reaction to the identified substance.

### Examples

 

| |
| :--- |
| [Typical Food Allergy](AllergyIntolerance-example.md) |
| [Refuted Food Allergy](AllergyIntolerance-example-refuted.md) |

 

**USCDI+ Quality Elements:**

* code: (USCDI+ Quality) (USCDI) Code that identifies the allergy or intolerance
* onset[x]: (USCDI+ Quality) When allergy or intolerance was identified
* recordedDate: (USCDI+ Quality) Date first version of the resource instance was recorded
* lastOccurrence: (USCDI+ Quality) Date(/time) of last known occurrence of a reaction
* reaction: (USCDI+ Quality) (USCDI) Adverse Reaction Events linked to exposure to substance

**Usages:**

* Refer to this Profile: [US Quality Core AdverseEvent](StructureDefinition-us-quality-core-adverseevent.md) and [US Quality Core ImmunizationRecommendation](StructureDefinition-us-quality-core-immunizationrecommendation.md)
* Examples for this Profile: [AllergyIntolerance/example-refuted](AllergyIntolerance-example-refuted.md) and [AllergyIntolerance/example](AllergyIntolerance-example.md)
* CapabilityStatements using this Profile: [US Quality Core Client CapabilityStatement](CapabilityStatement-us-quality-core-client.md) and [US Quality Core Server CapabilityStatement](CapabilityStatement-us-quality-core-server.md)

You can also check for [usages in the FHIR IG Statistics](https://packages2.fhir.org/xig/resource/fhir.onc.us-quality-core|current/StructureDefinition/StructureDefinition-us-quality-core-allergyintolerance.json)

### Formal Views of Profile Content

 [Description of Profiles, Differentials, Snapshots and how the different presentations work](http://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#structure-definitions). 

 

Other representations of profile: [CSV](StructureDefinition-us-quality-core-allergyintolerance.csv), [Excel](StructureDefinition-us-quality-core-allergyintolerance.xlsx), [Schematron](StructureDefinition-us-quality-core-allergyintolerance.sch) 



## Resource Content

```json
{
  "resourceType" : "StructureDefinition",
  "id" : "us-quality-core-allergyintolerance",
  "url" : "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-allergyintolerance",
  "version" : "0.5.0",
  "name" : "USQualityCoreAllergyIntolerance",
  "title" : "US Quality Core AllergyIntolerance",
  "status" : "active",
  "experimental" : false,
  "date" : "2026-05-15",
  "publisher" : "Office of the National Coordinator for Health Information Technology (ONC)",
  "contact" : [{
    "name" : "Office of the National Coordinator for Health Information Technology (ONC)",
    "telecom" : [{
      "system" : "url",
      "value" : "https://www.healthit.gov/feedback"
    }]
  }],
  "description" : "Profile of AllergyIntolerance for decision support/quality metrics. Defines the core set of elements and extensions for quality rule and measure authors.",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "urn:iso:std:iso:3166",
      "code" : "US",
      "display" : "United States of America"
    }],
    "text" : "USA"
  }],
  "fhirVersion" : "4.0.1",
  "mapping" : [{
    "identity" : "rim",
    "uri" : "http://hl7.org/v3",
    "name" : "RIM Mapping"
  },
  {
    "identity" : "w5",
    "uri" : "http://hl7.org/fhir/fivews",
    "name" : "FiveWs Pattern Mapping"
  },
  {
    "identity" : "v2",
    "uri" : "http://hl7.org/v2",
    "name" : "HL7 v2 Mapping"
  }],
  "kind" : "resource",
  "abstract" : false,
  "type" : "AllergyIntolerance",
  "baseDefinition" : "http://hl7.org/fhir/us/core/StructureDefinition/us-core-allergyintolerance|6.1.0",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "id" : "AllergyIntolerance",
      "path" : "AllergyIntolerance",
      "definition" : "The US Quality Core AllergyIntolerance Profile is based upon the US Core AllergyIntolerance Profile which is based upon the core FHIR AllergyIntolerance Resource and created to meet the 2015 Edition Common Clinical Data Set 'Medical allergies' requirements.",
      "mustSupport" : false
    },
    {
      "id" : "AllergyIntolerance.extension:resolutionAge",
      "path" : "AllergyIntolerance.extension",
      "sliceName" : "resolutionAge",
      "definition" : "The estimated patient age at which the allergy or intolerance resolved. Should be specified only if the status is resolved.",
      "min" : 0,
      "max" : "1",
      "type" : [{
        "code" : "Extension",
        "profile" : ["http://hl7.org/fhir/StructureDefinition/allergyintolerance-resolutionAge"]
      }],
      "mustSupport" : false
    },
    {
      "id" : "AllergyIntolerance.type",
      "path" : "AllergyIntolerance.type",
      "short" : "allergy | intolerance - Underlying mechanism (if known)"
    },
    {
      "id" : "AllergyIntolerance.category",
      "path" : "AllergyIntolerance.category",
      "short" : "food | medication | environment | biologic"
    },
    {
      "id" : "AllergyIntolerance.criticality",
      "path" : "AllergyIntolerance.criticality",
      "short" : "low | high | unable-to-assess"
    },
    {
      "id" : "AllergyIntolerance.code",
      "extension" : [{
        "url" : "http://hl7.org/fhir/us/core/StructureDefinition/uscdi-requirement",
        "valueBoolean" : true
      },
      {
        "url" : "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality",
        "valueBoolean" : true
      }],
      "path" : "AllergyIntolerance.code",
      "short" : "(USCDI+ Quality) (USCDI) Code that identifies the allergy or intolerance"
    },
    {
      "id" : "AllergyIntolerance.patient",
      "extension" : [{
        "url" : "http://hl7.org/fhir/us/core/StructureDefinition/uscdi-requirement",
        "valueBoolean" : true
      }],
      "path" : "AllergyIntolerance.patient",
      "short" : "(USCDI) Who the sensitivity is for",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "Reference",
        "targetProfile" : ["http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-patient"]
      }]
    },
    {
      "id" : "AllergyIntolerance.onset[x]",
      "extension" : [{
        "url" : "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality",
        "valueBoolean" : true
      }],
      "path" : "AllergyIntolerance.onset[x]",
      "short" : "(USCDI+ Quality) When allergy or intolerance was identified",
      "type" : [{
        "code" : "dateTime"
      },
      {
        "code" : "Age"
      },
      {
        "code" : "Period"
      },
      {
        "code" : "Range"
      }],
      "mustSupport" : false
    },
    {
      "id" : "AllergyIntolerance.recordedDate",
      "extension" : [{
        "url" : "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality",
        "valueBoolean" : true
      }],
      "path" : "AllergyIntolerance.recordedDate",
      "short" : "(USCDI+ Quality) Date first version of the resource instance was recorded",
      "type" : [{
        "code" : "dateTime"
      }]
    },
    {
      "id" : "AllergyIntolerance.lastOccurrence",
      "extension" : [{
        "url" : "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality",
        "valueBoolean" : true
      }],
      "path" : "AllergyIntolerance.lastOccurrence",
      "short" : "(USCDI+ Quality) Date(/time) of last known occurrence of a reaction"
    },
    {
      "id" : "AllergyIntolerance.reaction",
      "extension" : [{
        "url" : "http://hl7.org/fhir/us/core/StructureDefinition/uscdi-requirement",
        "valueBoolean" : true
      },
      {
        "url" : "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/uscdiplusquality",
        "valueBoolean" : true
      }],
      "path" : "AllergyIntolerance.reaction",
      "short" : "(USCDI+ Quality) (USCDI) Adverse Reaction Events linked to exposure to substance"
    },
    {
      "id" : "AllergyIntolerance.reaction.manifestation",
      "extension" : [{
        "url" : "http://hl7.org/fhir/us/core/StructureDefinition/uscdi-requirement",
        "valueBoolean" : true
      }],
      "path" : "AllergyIntolerance.reaction.manifestation",
      "short" : "(USCDI) Clinical symptoms/signs associated with the Event"
    },
    {
      "id" : "AllergyIntolerance.reaction.severity",
      "path" : "AllergyIntolerance.reaction.severity",
      "short" : "mild | moderate | severe (of event as a whole)"
    }]
  }
}

```
