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

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

## category
**Description:** The behavior associated with the message

**Type:** token

**Expression:** MessageDefinition.category

**Path:** MessageDefinition.category

**Standards Status:** normative

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


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

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

**Type:** token

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

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

**Standards Status:** normative

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


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

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

**Type:** quantity

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

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

**Standards Status:** normative

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


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

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

**Type:** token

**Expression:** MessageDefinition.useContext.code

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

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/MessageDefinition-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 message definition

**Type:** composite

**Expression:** MessageDefinition.useContext

**Standards Status:** normative

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


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

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

**Type:** composite

**Expression:** MessageDefinition.useContext

**Standards Status:** normative

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


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

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

**Type:** date

**Expression:** MessageDefinition.date

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

**Standards Status:** normative

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


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

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

**Type:** string

**Expression:** MessageDefinition.description

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

**Standards Status:** normative

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


<a id="event"></a>

## event
**Description:** The event that triggers the message or link to the event definition.

**Type:** token

**Expression:** MessageDefinition.event.ofType(Coding)

**Path:** MessageDefinition.event[x]

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/MessageDefinition-event


<a id="focus"></a>

## focus
**Description:** A resource that is a permitted focus of the message

**Type:** token

**Expression:** MessageDefinition.focus.code

**Path:** MessageDefinition.focus.code

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/MessageDefinition-focus


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

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

**Type:** token

**Expression:** MessageDefinition.identifier

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

**Standards Status:** normative

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


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

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

**Type:** token

**Expression:** MessageDefinition.jurisdiction

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

**Standards Status:** normative

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


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

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

**Type:** string

**Expression:** MessageDefinition.name

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

**Standards Status:** normative

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


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

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

**Type:** string

**Expression:** MessageDefinition.publisher

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

**Standards Status:** normative

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


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

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

**Type:** token

**Expression:** MessageDefinition.status

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

**Standards Status:** normative

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


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

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

**Type:** string

**Expression:** MessageDefinition.title

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

**Standards Status:** normative

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


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

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

**Type:** uri

**Expression:** MessageDefinition.url

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

**Standards Status:** normative

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


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

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

**Type:** token

**Expression:** MessageDefinition.version

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

**Standards Status:** normative

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


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

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

**Type:** token

**Expression:** MessageDefinition.experimental

**Path:** MessageDefinition.experimental

**Standards Status:** normative