> ## 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.

# DeviceUseStatement

> A record of a device being used by a patient where the record is the result of a report from the patient or another clinician.

## Properties

| Name            | Required | Type                                                                                                                                                                                                                                                                                                                                                                                     | Description                               |
| --------------- | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------- |
| identifier      | No       | [Identifier](/medical-api/fhir/data-types/identifier)\[]                                                                                                                                                                                                                                                                                                                                 | External identifier for this record       |
| basedOn         | No       | Reference\<[ServiceRequest](/medical-api/fhir/resources/servicerequest)>\[]                                                                                                                                                                                                                                                                                                              | Fulfills plan, proposal or order          |
| status          | Yes      | code                                                                                                                                                                                                                                                                                                                                                                                     | active / completed / entered-in-error +   |
| subject         | Yes      | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Group](/medical-api/fhir/resources/group)>                                                                                                                                                                                                                                                                                  | Patient using device                      |
| derivedFrom     | No       | Reference\<[ServiceRequest](/medical-api/fhir/resources/servicerequest) / [Procedure](/medical-api/fhir/resources/procedure) / [Claim](/medical-api/fhir/resources/claim) / [Observation](/medical-api/fhir/resources/observation) / [QuestionnaireResponse](/medical-api/fhir/resources/questionnaireresponse) / [DocumentReference](/medical-api/fhir/resources/documentreference)>\[] | Supporting information                    |
| timing\[x]      | No       | [Timing](/medical-api/fhir/data-types/timing), [Period](/medical-api/fhir/data-types/period), dateTime                                                                                                                                                                                                                                                                                   | How often the device was used             |
| recordedOn      | No       | dateTime                                                                                                                                                                                                                                                                                                                                                                                 | When statement was recorded               |
| source          | No       | Reference\<[Patient](/medical-api/fhir/resources/patient) / [Practitioner](/medical-api/fhir/resources/practitioner) / [PractitionerRole](/medical-api/fhir/resources/practitionerrole) / [RelatedPerson](/medical-api/fhir/resources/relatedperson)>                                                                                                                                    | Who made the statement                    |
| device          | Yes      | Reference\<[Device](/medical-api/fhir/resources/device)>                                                                                                                                                                                                                                                                                                                                 | Reference to device used                  |
| reasonCode      | No       | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)\[]                                                                                                                                                                                                                                                                                                                       | Why device was used                       |
| 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) / [Media](/medical-api/fhir/resources/media)>\[]                                                                          | Why was DeviceUseStatement performed?     |
| bodySite        | No       | [CodeableConcept](/medical-api/fhir/data-types/codeableconcept)                                                                                                                                                                                                                                                                                                                          | Target body site                          |
| note            | No       | [Annotation](/medical-api/fhir/data-types/annotation)\[]                                                                                                                                                                                                                                                                                                                                 | Addition details (comments, instructions) |

## Search Parameters

| Name       | Type      | Description                   | Expression                    |
| ---------- | --------- | ----------------------------- | ----------------------------- |
| patient    | reference | Search by subject - a patient | DeviceUseStatement.subject    |
| device     | reference | Search by device              | DeviceUseStatement.device     |
| identifier | token     | Search by identifier          | DeviceUseStatement.identifier |
| subject    | reference | Search by subject             | DeviceUseStatement.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 [DeviceUseStatement](https://www.hl7.org/fhir/StructureDefinition/DeviceUseStatement).