---
type: "search-params"
title: "AllergyIntolerance Search Parameters"
resource: "AllergyIntolerance"
---
# AllergyIntolerance Search Parameters

<a id="asserter"></a>

## asserter
**Description:** Source of the information about the allergy

**Type:** reference

**Expression:** AllergyIntolerance.asserter

**Path:** AllergyIntolerance.asserter

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-asserter


<a id="category"></a>

## category
**Description:** food | medication | environment | biologic

**Type:** token

**Expression:** AllergyIntolerance.category

**Path:** AllergyIntolerance.category

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-category


<a id="clinical-status"></a>

## clinical-status
**Description:** active | inactive | resolved

**Type:** token

**Expression:** AllergyIntolerance.clinicalStatus

**Path:** AllergyIntolerance.clinicalStatus

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-clinical-status


<a id="code"></a>

## code
**Description:** Code that identifies the allergy or intolerance

**Type:** token

**Expression:** AllergyIntolerance.code | AllergyIntolerance.reaction.substance

**Path:** AllergyIntolerance.code,AllergyIntolerance.reaction.substance

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-code


<a id="criticality"></a>

## criticality
**Description:** low | high | unable-to-assess

**Type:** token

**Expression:** AllergyIntolerance.criticality

**Path:** AllergyIntolerance.criticality

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-criticality


<a id="date"></a>

## date
**Description:** Date first version of the resource instance was recorded

**Type:** date

**Expression:** AllergyIntolerance.recordedDate

**Path:** AllergyIntolerance.recordedDate

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-date


<a id="identifier"></a>

## identifier
**Description:** External ids for this item

**Type:** token

**Expression:** AllergyIntolerance.identifier

**Path:** AllergyIntolerance.identifier

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-identifier


<a id="last-reaction-date"></a>

## last-reaction-date
**Description:** Date(/time) of last known occurrence of a reaction

**Type:** date

**Expression:** AllergyIntolerance.lastReactionOccurrence

**Path:** AllergyIntolerance.lastReactionOccurrence

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-last-reaction-date


<a id="manifestation-code"></a>

## manifestation-code
**Description:** Clinical symptoms/signs associated with the Event

**Type:** token

**Expression:** AllergyIntolerance.reaction.manifestation.concept

**Path:** AllergyIntolerance.reaction.manifestation.concept

**Standards Status:** normative


<a id="manifestation-reference"></a>

## manifestation-reference
**Description:** Clinical symptoms/signs associated with the Event

**Type:** reference

**Expression:** AllergyIntolerance.reaction.manifestation.reference

**Path:** AllergyIntolerance.reaction.manifestation.reference

**Standards Status:** normative


<a id="patient"></a>

## patient
**Description:** Who the sensitivity is for

**Type:** reference

**Expression:** AllergyIntolerance.patient

**Path:** AllergyIntolerance.patient

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-patient


<a id="route"></a>

## route
**Description:** How the subject was exposed to the substance

**Type:** token

**Expression:** AllergyIntolerance.reaction.exposureRoute

**Path:** AllergyIntolerance.reaction.exposureRoute

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-route


<a id="severity"></a>

## severity
**Description:** mild | moderate | severe (of event as a whole)

**Type:** token

**Expression:** AllergyIntolerance.reaction.severity

**Path:** AllergyIntolerance.reaction.severity

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-severity


<a id="type"></a>

## type
**Description:** allergy | intolerance - Underlying mechanism (if known)

**Type:** token

**Expression:** AllergyIntolerance.type

**Path:** AllergyIntolerance.type

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-type


<a id="verification-status"></a>

## verification-status
**Description:** unconfirmed | presumed | confirmed | refuted | entered-in-error

**Type:** token

**Expression:** AllergyIntolerance.verificationStatus

**Path:** AllergyIntolerance.verificationStatus

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AllergyIntolerance-verification-status