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

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

## code
**Description:** A code defined in the code system

**Type:** token

**Expression:** CodeSystem.repeat(concept).code

**Path:** CodeSystem.concept.code

**Standards Status:** normative

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


<a id="content-mode"></a>

## content-mode
**Description:** not-present | example | fragment | complete | supplement

**Type:** token

**Expression:** CodeSystem.content

**Path:** CodeSystem.content

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/CodeSystem-content-mode


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

## context
**Description:** A use context assigned to the code system

**Type:** token

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

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

**Standards Status:** normative

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


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

## context-quantity
**Description:** A quantity- or range-valued use context assigned to the code system

**Type:** quantity

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

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

**Standards Status:** normative

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


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

## context-type
**Description:** A type of use context assigned to the code system

**Type:** token

**Expression:** CodeSystem.useContext.code

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

**Standards Status:** normative

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

**Type:** composite

**Expression:** CodeSystem.useContext

**Standards Status:** normative

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


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

## context-type-value
**Description:** A use context type and value assigned to the code system

**Type:** composite

**Expression:** CodeSystem.useContext

**Standards Status:** normative

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


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

## date
**Description:** The code system publication date

**Type:** date

**Expression:** CodeSystem.date

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

**Standards Status:** normative

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


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

## description
**Description:** The description of the code system

**Type:** string

**Expression:** CodeSystem.description

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

**Standards Status:** normative

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


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

## identifier
**Description:** External identifier for the code system

**Type:** token

**Expression:** CodeSystem.identifier

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

**Standards Status:** normative

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


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

## jurisdiction
**Description:** Jurisdiction of the authority that maintains the the code system

**Type:** token

**Expression:** CodeSystem.jurisdiction

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

**Standards Status:** normative

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


<a id="language"></a>

## language
**Description:** A language in which a designation is provided

**Type:** token

**Expression:** CodeSystem.repeat(concept).designation.language

**Path:** CodeSystem.concept.designation.language

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/CodeSystem-language


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

## name
**Description:** Computationally friendly name of the code system

**Type:** string

**Expression:** CodeSystem.name

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

**Standards Status:** normative

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


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

## publisher
**Description:** Name of the publisher of the code system

**Type:** string

**Expression:** CodeSystem.publisher

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

**Standards Status:** normative

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


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

## status
**Description:** The current status of the code system

**Type:** token

**Expression:** CodeSystem.status

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

**Standards Status:** normative

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


<a id="supplements"></a>

## supplements
**Description:** Find code system supplements for the referenced code system

**Type:** reference

**Expression:** CodeSystem.supplements

**Path:** CodeSystem.supplements

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/CodeSystem-supplements


<a id="system"></a>

## system
**Description:** The system for any codes defined by this code system (same as 'url')

**Type:** uri

**Expression:** CodeSystem.url

**Path:** CodeSystem.url

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/CodeSystem-system


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

## title
**Description:** The human-friendly name of the code system

**Type:** string

**Expression:** CodeSystem.title

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

**Standards Status:** normative

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


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

## url
**Description:** The uri that identifies the code system

**Type:** uri

**Expression:** CodeSystem.url

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

**Standards Status:** normative

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


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

## version
**Description:** The business version of the code system

**Type:** token

**Expression:** CodeSystem.version

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

**Standards Status:** normative

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


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

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

**Type:** date

**Expression:** CodeSystem.effectivePeriod

**Path:** CodeSystem.effectivePeriod

**Standards Status:** normative

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


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

## derived-from
**Description:** A resource that the CodeSystem is derived from

**Type:** reference

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

**Path:** CodeSystem.relatedArtifact.resource

**Standards Status:** normative


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

## predecessor
**Description:** The predecessor of the CodeSystem

**Type:** reference

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

**Path:** CodeSystem.relatedArtifact.resource

**Standards Status:** normative


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

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

**Type:** token

**Expression:** CodeSystem.topic

**Path:** CodeSystem.topic

**Standards Status:** normative


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

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

**Type:** token

**Expression:** CodeSystem.experimental

**Path:** CodeSystem.experimental

**Standards Status:** normative