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

<a id="composed-of"></a>

## composed-of
**Description:** What resource is being referenced

**Type:** reference

**Expression:** ActivityDefinition.relatedArtifact.where(type='composed-of').resource

**Path:** ActivityDefinition.relatedArtifact.resource

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-composed-of


<a id="context"></a>

## context
**Description:** A use context assigned to the activity definition

**Type:** token

**Expression:** (ActivityDefinition.useContext.value.ofType(CodeableConcept))

**Path:** {{name}}.useContext.valueCodeableConcept

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-context


<a id="context-quantity"></a>

## context-quantity
**Description:** A quantity- or range-valued use context assigned to the activity definition

**Type:** quantity

**Expression:** (ActivityDefinition.useContext.value.ofType(Quantity)) | (ActivityDefinition.useContext.value.ofType(Range))

**Path:** {{name}}.useContext.valueQuantity,{{name}}.useContext.valueRange

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-context-quantity


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

## context-type
**Description:** A type of use context assigned to the activity definition

**Type:** token

**Expression:** ActivityDefinition.useContext.code

**Path:** {{name}}.useContext.code

**Standards Status:** normative

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


<a id="context-type-quantity"></a>

## context-type-quantity
**Description:** A use context type and quantity- or range-based value assigned to the activity definition

**Type:** composite

**Expression:** ActivityDefinition.useContext

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-context-type-quantity


<a id="context-type-value"></a>

## context-type-value
**Description:** A use context type and value assigned to the activity definition

**Type:** composite

**Expression:** ActivityDefinition.useContext

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-context-type-value


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

## date
**Description:** The activity definition publication date

**Type:** date

**Expression:** ActivityDefinition.date

**Path:** {{name}}.date

**Standards Status:** normative

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


<a id="depends-on"></a>

## depends-on
**Description:** What resource is being referenced

**Type:** reference

**Expression:** ActivityDefinition.relatedArtifact.where(type='depends-on').resource | ActivityDefinition.library

**Path:** ActivityDefinition.relatedArtifact.resource,ActivityDefinition.library

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-depends-on


<a id="derived-from"></a>

## derived-from
**Description:** What resource is being referenced

**Type:** reference

**Expression:** ActivityDefinition.relatedArtifact.where(type='derived-from').resource

**Path:** ActivityDefinition.relatedArtifact.resource

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-derived-from


<a id="description"></a>

## description
**Description:** The description of the activity definition

**Type:** string

**Expression:** ActivityDefinition.description

**Path:** {{name}}.description

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-description


<a id="effective"></a>

## effective
**Description:** The time during which the activity definition is intended to be in use

**Type:** date

**Expression:** ActivityDefinition.effectivePeriod

**Path:** {{name}}.effectivePeriod

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-effective


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

## identifier
**Description:** External identifier for the activity definition

**Type:** token

**Expression:** ActivityDefinition.identifier

**Path:** {{name}}.identifier

**Standards Status:** normative

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


<a id="jurisdiction"></a>

## jurisdiction
**Description:** Jurisdiction of the authority that maintains the the activity definition

**Type:** token

**Expression:** ActivityDefinition.jurisdiction

**Path:** {{name}}.jurisdiction

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-jurisdiction


<a id="kind"></a>

## kind
**Description:** The kind of activity definition

**Type:** token

**Expression:** ActivityDefinition.kind

**Path:** {{name}}.kind

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-kind


<a id="name"></a>

## name
**Description:** Computationally friendly name of the activity definition

**Type:** string

**Expression:** ActivityDefinition.name

**Path:** {{name}}.name

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-name


<a id="predecessor"></a>

## predecessor
**Description:** What resource is being referenced

**Type:** reference

**Expression:** ActivityDefinition.relatedArtifact.where(type='predecessor').resource

**Path:** ActivityDefinition.relatedArtifact.resource

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-predecessor


<a id="publisher"></a>

## publisher
**Description:** Name of the publisher of the activity definition

**Type:** string

**Expression:** ActivityDefinition.publisher

**Path:** {{name}}.publisher

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-publisher


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

## status
**Description:** The current status of the activity definition

**Type:** token

**Expression:** ActivityDefinition.status

**Path:** {{name}}.status

**Standards Status:** normative

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


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

## subject-code
**Description:** The subject of the ActivityDefinition when expressed as a code

**Type:** token

**Expression:** ActivityDefinition.subject as CodeableConcept

**Path:** {{name}}.subject[x]

**Standards Status:** normative

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


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

## subject-reference
**Description:** The subject of the ActivityDefinition when expressed as a reference

**Type:** reference

**Expression:** ActivityDefinition.subject as Reference

**Path:** {{name}}.subject[x]

**Standards Status:** normative

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


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

## subject-canonical
**Description:** The subject of the ActivityDefinition when expressed as a canonical

**Type:** reference

**Expression:** ActivityDefinition.subject as canonical

**Path:** {{name}}.subject[x]

**Standards Status:** normative

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


<a id="successor"></a>

## successor
**Description:** What resource is being referenced

**Type:** reference

**Expression:** ActivityDefinition.relatedArtifact.where(type='successor').resource

**Path:** ActivityDefinition.relatedArtifact.resource

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-successor


<a id="title"></a>

## title
**Description:** The human-friendly name of the activity definition

**Type:** string

**Expression:** ActivityDefinition.title

**Path:** {{name}}.title

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-title


<a id="topic"></a>

## topic
**Description:** Topics associated with the module

**Type:** token

**Expression:** ActivityDefinition.topic

**Path:** ActivityDefinition.topic

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-topic


<a id="url"></a>

## url
**Description:** The uri that identifies the activity definition

**Type:** uri

**Expression:** ActivityDefinition.url

**Path:** {{name}}.url

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-url


<a id="version"></a>

## version
**Description:** The business version of the activity definition

**Type:** token

**Expression:** ActivityDefinition.version

**Path:** {{name}}.version

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-version


<a id="kind"></a>

## kind
**Description:** The kind of activity definition

**Type:** token

**Expression:** ActivityDefinition.kind

**Path:** ActivityDefinition.kind

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ActivityDefinition-kind


<a id="experimental"></a>

## experimental
**Description:** Whether the ActivityDefinition is experimental

**Type:** token

**Expression:** ActivityDefinition.experimental

**Path:** ActivityDefinition.experimental

**Standards Status:** normative