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

<a id="_content"></a>

## _content
**Description:** Search on the entire content of the resource

**Type:** special

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_content


<a id="_id"></a>

## _id
**Description:** Logical id of this artifact

**Type:** token

**Expression:** Resource.id

**Path:** Resource.id

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_id


<a id="_in"></a>

## _in
**Description:** Allows for the retrieval of resources that are active members of a CareTeam, Group, or List

**Type:** reference

**Expression:** Resource.id

**Path:** Resource.id

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_in


<a id="_language"></a>

## _language
**Description:** Language of the resource content

**Type:** token

**Expression:** Resource.language

**Path:** Resource.language

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_language


<a id="_lastUpdated"></a>

## _lastUpdated
**Description:** When the resource version last changed

**Type:** date

**Expression:** Resource.meta.lastUpdated

**Path:** Resource.meta.lastUpdated

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_lastUpdated


<a id="_list"></a>

## _list
**Description:** Allows for the retrieval of resources that are referenced by a List resource or by one of the pre-defined functional lists

**Type:** special

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_list


<a id="_profile"></a>

## _profile
**Description:** Profiles this resource claims to conform to

**Type:** reference

**Expression:** Resource.meta.profile

**Path:** Resource.meta.profile

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_profile


<a id="_query"></a>

## _query
**Description:** A custom search profile that describes a specific defined query operation

**Type:** special

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_query


<a id="_security"></a>

## _security
**Description:** Security Labels applied to this resource

**Type:** token

**Expression:** Resource.meta.security

**Path:** Resource.meta.security

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_security


<a id="_source"></a>

## _source
**Description:** Identifies where the resource comes from

**Type:** uri

**Expression:** Resource.meta.source

**Path:** Resource.meta.source

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_source


<a id="_tag"></a>

## _tag
**Description:** Tags applied to this resource

**Type:** token

**Expression:** Resource.meta.tag

**Path:** Resource.meta.tag

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_tag


<a id="_has"></a>

## _has
**Description:** Provides limited support for reverse chaining - that is, selecting resources based on the properties of resources that refer to them (instead of chaining where resources can be selected based on the properties of resources that they refer to). See the FHIR search page for further documentation

**Type:** special

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_has


<a id="_type"></a>

## _type
**Description:** A resource type filter

**Type:** special

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_type


<a id="_filter"></a>

## _filter
**Description:** Filter search parameter which supports a more sophisticated grammar for searching. See [documentation](search_filter.html) for further details

**Type:** special

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/Resource-_filter