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

<a id="device"></a>

## device
**Description:** Search by device

**Type:** token

**Expression:** DeviceUsage.device.concept

**Path:** DeviceUsage.device.concept

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/DeviceUsage-device


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

## identifier
**Description:** Search by identifier

**Type:** token

**Expression:** DeviceUsage.identifier

**Path:** DeviceUsage.identifier

**Standards Status:** normative

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


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

## patient
**Description:** Search by patient who used the device

**Type:** reference

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

**Path:** DeviceUsage.subject

**Standards Status:** normative

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


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

## subject
**Description:** The individual(s) who used the device

**Type:** reference

**Expression:** DeviceUsage.subject

**Path:** DeviceUsage.subject

**Standards Status:** normative

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


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

## status
**Description:** The status of the device usage

**Type:** token

**Expression:** DeviceUsage.status

**Path:** DeviceUsage.status

**Standards Status:** normative

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


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

## reference
**Description:** Target body structure (reference)

**Type:** reference

**Expression:** DeviceUsage.bodyStructure.reference

**Path:** DeviceUsage.bodyStructure.reference

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/DeviceUsage-body-structure-reference


<a id="body-structure-code"></a>

## body-structure-code
**Description:** Code for target body structure

**Type:** token

**Expression:** DeviceUsage.bodyStructure.concept

**Path:** DeviceUsage.bodyStructure.concept

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/DeviceUsage-body-structure-code