> ## Documentation Index
> Fetch the complete documentation index at: https://docs.metriport.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DeviceRequest

> Represents a request for a patient to employ a medical device. The device may be an implantable device, or an external assistive device, such as a walker.

## Properties

| Name | Required | Type | Description |
| - | - | - | - |
| identifier | No | [Identifier](/medical-api/fhir/data-types/identifier)\[] | External Request identifier |
| instantiatesCanonical | No | canonical\[] | Instantiates FHIR protocol or definition |
| instantiatesUri | No | uri\[] | Instantiates external protocol or definition |
| basedOn | No | Reference\<Resource>\[] | What request fulfills |
| priorRequest | No | Reference\<Resource>\[] | What request replaces |
| groupIdentifier | No | [Identifier](/medical-api/fhir/data-types/identifier) | Identifier of composite request |
| status | No | code | draft / active / on-hold / revoked / completed / entered-in-error / unknown |
| intent | Yes | code | proposal / plan / directive / order / original-order / reflex-order / filler-order / instance-order / option |
| priority | No | code | routine / urgent / asap / stat |
| code\[x] | Yes | Reference\<[Device](/medical-api/fhir/resources/device)>, [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Device requested |
| parameter | No | DeviceRequestParameter | Device details |
| - id | No | string | Unique id for inter-element referencing |
| - extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations |
| - modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored even if unrecognized |
| - code | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Device detail |
| - value\[x] | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept), [Quantity](/medical-api/fhir/data-types/quantity), [Range](/medical-api/fhir/data-types/range), boolean | Value of detail |
| subject | Yes | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Group](/medical-api/fhir/resources/group) / [Location](/medical-api/fhir/resources/location) / [Device](/medical-api/fhir/resources/device)> | Focus of request |
| encounter | No | Reference\<[Encounter](/medical-api/fhir/resources/encounter)> | Encounter motivating request |
| occurrence\[x] | No | dateTime, [Period](/medical-api/fhir/data-types/period), [Timing](/medical-api/fhir/data-types/timing) | Desired time or schedule for use |
| authoredOn | No | dateTime | When recorded |
| requester | No | Reference\<[Device](/medical-api/fhir/resources/device) / [Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [Organization](/medical-api/fhir/resources/organization)> | Who/what is requesting diagnostics |
| performerType | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept) | Filler role |
| performer | No | Reference\<[Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [Organization](/medical-api/fhir/resources/organization) / [CareTeam](/medical-api/fhir/resources/careteam) / [HealthcareService](/medical-api/fhir/resources/healthcareservice) / [Patient](/medical-api/fhir/resources/patient) / [Device](/medical-api/fhir/resources/device) / [RelatedPerson](/medical-api/fhir/resources/relatedperson)> | Requested Filler |
| reasonCode | No | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[] | Coded Reason for request |
| reasonReference | No | Reference\<[Condition](/medical-api/fhir/resources/condition) / [Observation](/medical-api/fhir/resources/observation) / [DiagnosticReport](/medical-api/fhir/resources/diagnosticreport) / [DocumentReference](/medical-api/fhir/resources/documentreference)>\[] | Linked Reason for request |
| insurance | No | Reference\<[Coverage](/medical-api/fhir/resources/coverage) / [ClaimResponse](/medical-api/fhir/resources/claimresponse)>\[] | Associated insurance coverage |
| supportingInfo | No | Reference\<Resource>\[] | Additional clinical information |
| note | No | [Annotation](/medical-api/fhir/data-types/annotation)\[] | Notes or comments |
| relevantHistory | No | Reference\<[Provenance](/medical-api/fhir/resources/provenance)>\[] | Request provenance |

## Search Parameters

| Name | Type | Description | Expression |
| - | - | - | - |
| code | token | Code for what is being requested/ordered | DeviceRequest.code |
| identifier | token | Business identifier for request/order | DeviceRequest.identifier |
| patient | reference | Individual the service is ordered for | DeviceRequest.subject |
| encounter | reference | Encounter during which request was created | DeviceRequest.encounter |
| authored-on | date | When the request transitioned to being actionable | DeviceRequest.authoredOn |
| based-on | reference | Plan/proposal/order fulfilled by this request | DeviceRequest.basedOn |
| device | reference | Reference to resource that is being requested/ordered | DeviceRequest.code |
| event-date | date | When service should occur | DeviceRequest.occurrence |
| group-identifier | token | Composite request this is part of | DeviceRequest.groupIdentifier |
| instantiates-canonical | reference | Instantiates FHIR protocol or definition | DeviceRequest.instantiatesCanonical |
| instantiates-uri | uri | Instantiates external protocol or definition | DeviceRequest.instantiatesUri |
| insurance | reference | Associated insurance coverage | DeviceRequest.insurance |
| intent | token | proposal / plan / original-order /reflex-order | DeviceRequest.intent |
| performer | reference | Desired performer for service | DeviceRequest.performer |
| prior-request | reference | Request takes the place of referenced completed or terminated requests | DeviceRequest.priorRequest |
| requester | reference | Who/what is requesting service | DeviceRequest.requester |
| status | token | entered-in-error / draft / active /suspended / completed | DeviceRequest.status |
| subject | reference | Individual the service is ordered for | DeviceRequest.subject |

## Inherited Properties

| Name | Required | Type | Description |
| - | - | - | - |
| id | No | string | Logical id of this artifact |
| meta | No | [Meta](/medical-api/fhir/data-types/meta) | Metadata about the resource |
| implicitRules | No | uri | A set of rules under which this content was created |
| language | No | code | Language of the resource content |
| text | No | [Narrative](/medical-api/fhir/data-types/narrative) | Text summary of the resource, for human interpretation |
| contained | No | Resource\[] | Contained, inline Resources |
| extension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Additional content defined by implementations |
| modifierExtension | No | [Extension](/medical-api/fhir/data-types/extension)\[] | Extensions that cannot be ignored |

To view the FHIR specification for this resource, see [DeviceRequest](https://www.hl7.org/fhir/StructureDefinition/DeviceRequest).


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.