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

<a id="actuality"></a>

## actuality
**Description:** actual | potential

**Type:** token

**Expression:** AdverseEvent.actuality

**Path:** AdverseEvent.actuality

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-actuality


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

## category
**Description:** wrong-patient | procedure-mishap | medication-mishap | device | unsafe-physical-environment | hospital-aquired-infection | wrong-body-site

**Type:** token

**Expression:** AdverseEvent.category

**Path:** AdverseEvent.category

**Standards Status:** normative

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


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

## code
**Description:** Event or incident that occurred or was averted

**Type:** token

**Expression:** AdverseEvent.code

**Path:** AdverseEvent.code

**Standards Status:** normative

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


<a id="occurrence"></a>

## occurrence
**Description:** When the suspect entity occurred

**Type:** date

**Expression:** AdverseEvent.suspectEntity.occurrence.ofType(dateTime) | AdverseEvent.suspectEntity.occurrence.ofType(Period)

**Path:** AdverseEvent.suspectEntity.occurrence[x]

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-occurrence


<a id="effect"></a>

## effect
**Description:** When the effect of the event occurred

**Type:** date

**Expression:** AdverseEvent.effect.ofType(dateTime) | AdverseEvent.effect.ofType(Period)

**Path:** AdverseEvent.effect[x]

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-effect


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

## identifier
**Description:** Business identifier for the event

**Type:** token

**Expression:** AdverseEvent.identifier

**Path:** AdverseEvent.identifier

**Standards Status:** normative

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


<a id="location"></a>

## location
**Description:** Location where adverse event occurred

**Type:** reference

**Expression:** AdverseEvent.location

**Path:** AdverseEvent.location

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-location


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

## patient
**Description:** Subject impacted by event

**Type:** reference

**Expression:** AdverseEvent.subject.where(resolve() is Patient)

**Path:** AdverseEvent.subject

**Standards Status:** normative

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


<a id="recorder"></a>

## recorder
**Description:** Who recorded the adverse event

**Type:** reference

**Expression:** AdverseEvent.recorder

**Path:** AdverseEvent.recorder

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-recorder


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

## resultingeffect-reference
**Description:** Effect on the subject due to this event

**Type:** reference

**Expression:** AdverseEvent.resultingEffect.reference

**Path:** AdverseEvent.resultingEffect.reference

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-resultingeffect


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

## resultingeffect-code
**Description:** Effect on the subject due to this event

**Type:** token

**Expression:** AdverseEvent.resultingEffect.concept

**Path:** AdverseEvent.resultingEffect.concept

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-resultingeffect


<a id="seriousness"></a>

## seriousness
**Description:** Seriousness or gravity of the event

**Type:** token

**Expression:** AdverseEvent.seriousness

**Path:** AdverseEvent.seriousness

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-seriousness


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

## status
**Description:** in-progress | completed | entered-in-error | unknown

**Type:** token

**Expression:** AdverseEvent.status

**Path:** AdverseEvent.status

**Standards Status:** normative

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


<a id="study"></a>

## study
**Description:** Research study that the subject is enrolled in

**Type:** reference

**Expression:** AdverseEvent.study

**Path:** AdverseEvent.study

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-study


<a id="subject"></a>

## subject
**Description:** Subject impacted by event

**Type:** reference

**Expression:** AdverseEvent.subject

**Path:** AdverseEvent.subject

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-subject


<a id="substance"></a>

## substance
**Description:** Refers to the specific entity that caused the adverse event

**Type:** reference

**Expression:** AdverseEvent.suspectEntity.instance.reference

**Path:** AdverseEvent.suspectEntity.instance.reference

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/AdverseEvent-substance