---
type: "resource-definitions"
title: "DeviceUsage Definitions"
resource: "DeviceUsage"
---

# DeviceUsage Definitions

<a id="DeviceUsage"></a>

## DeviceUsage
Record of use of a device

**Definition:** A record of a device being used by a patient where the record is the result of a report from the patient or a clinician.

**Cardinality:** 0..*

**Mappings:** workflow=Event; quick=DeviceUsePerformanceOccurrence; w5=workflow.order


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

## DeviceUsage.identifier
External identifier for this record

**Definition:** An external identifier for this statement such as an IRI.

**Cardinality:** 0..*

**Type:** [Identifier](/Identifier)

**Summary:** true

**Mappings:** workflow=Event.identifier; w5=FiveWs.identifier; quick=ClinicalStatement.identifier


<a id="DeviceUsage.basedOn"></a>

## DeviceUsage.basedOn
Fulfills plan, proposal or order

**Definition:** A plan, proposal or order that is fulfilled in whole or in part by this DeviceUsage.

**Requirements:** Allows tracing of authorization for the DeviceUsage and tracking whether proposals/recommendations were acted upon.

**Aliases:** fulfills

**Cardinality:** 0..*

**Type:** Reference([ServiceRequest](/ServiceRequest))

**Summary:** true

**Mappings:** workflow=Event.basedOn; v2=ORC in proximity to EVN segment; rim=.outboundRelationship[typeCode=FLFS].target


<a id="DeviceUsage.partOf"></a>

## DeviceUsage.partOf
Part of referenced device usage

**Definition:** A larger event of which this particular device usage is one part the usage.

**Cardinality:** 0..*

**Type:** Reference([DeviceUsage](/DeviceUsage))

**Summary:** true

**Mappings:** workflow=Event.partOf


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

## DeviceUsage.status
preparation | active | completed | not-done | entered-in-error +

**Definition:** The current state of the device usage.

**Comments:** DeviceUsage is a statement at a point in time.  The status is only representative at the point when it was asserted.  The value set for contains codes that assert the status of the use  by the patient (for example, stopped or on hold) as well as codes that assert the status of the resource itself (for example, entered in error).

This element is labeled as a modifier because the status contains the codes that mark the statement as not currently valid. When the status is 'not-done', the [event-statusReason](http://hl7.org/fhir/StructureDefinition/event-statusReason) extension should be used to indicate why the DeviceUsage was not done.

**Cardinality:** 1..1

**Type:** [code](/code)

**Binding:** required:[deviceusage-status](/valueset-deviceusage-status)

**Summary:** true

**Is Modifier:** true (Reason: This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid)

**Mappings:** workflow=Event.status; w5=FiveWs.status; rim=.statusCode; quick=…status


<a id="DeviceUsage.category"></a>

## DeviceUsage.category
The category of the statement - classifying how the statement is made

**Definition:** This attribute indicates a category for the statement - The device statement may be made in an inpatient or outpatient settting (inpatient | outpatient | community | patientspecified).

**Cardinality:** 0..*

**Type:** [CodeableConcept](/CodeableConcept)

**Mappings:** workflow=Event.category


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

## DeviceUsage.subject
Individuals(s) who used the device

**Definition:** The individual(s) who used the device.

**Comments:** Group is only allowed in the circumstance where the group represents a family or a household, and should not represent groups of Practitioners where other more specific resources can be used instead.

**Cardinality:** 1..1

**Type:** Reference([Patient](/Patient), [Group](/Group))

**Summary:** true

**Mappings:** workflow=Event.subject; w5=FiveWs.subject; quick=ClinicalStatement.subject


<a id="DeviceUsage.derivedFrom"></a>

## DeviceUsage.derivedFrom
Supporting information

**Definition:** Allows linking the DeviceUsage to the underlying Request, or to other information that supports or is used to derive the DeviceUsage.

**Comments:** The most common use cases for deriving a DeviceUsage comes from creating it from a request or from an observation or a claim. it should be noted that the amount of information that is available varies from the type resource that you derive the DeviceUsage from.

**Cardinality:** 0..*

**Type:** Reference([ServiceRequest](/ServiceRequest), [Procedure](/Procedure), [Claim](/Claim), [Observation](/Observation), [QuestionnaireResponse](/QuestionnaireResponse), [DocumentReference](/DocumentReference))

**Summary:** true


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

## DeviceUsage.context
The encounter or episode of care that establishes the context for this device use statement

**Definition:** The encounter or episode of care that establishes the context for this device use statement.

**Cardinality:** 0..1

**Type:** Reference([Encounter](/Encounter), [EpisodeOfCare](/EpisodeOfCare))

**Summary:** true

**Mappings:** workflow=Event.encounter


<a id="DeviceUsage.timing[x]"></a>

## DeviceUsage.timing[x]
How often  the device was used

**Definition:** How often the device was used.

**Cardinality:** 0..1

**Type:** [Timing](/Timing), [Period](/Period), [dateTime](/dateTime)

**Summary:** true

**Mappings:** workflow=Event.occurrence[x]; w5=FiveWs.done[x]; quick=DeviceUse.applicationSchedule


<a id="DeviceUsage.dateAsserted"></a>

## DeviceUsage.dateAsserted
When the statement was made (and recorded)

**Definition:** The time at which the statement was recorded by informationSource.

**Cardinality:** 0..1

**Type:** [dateTime](/dateTime)

**Summary:** true

**Mappings:** w5=FiveWs.recorded; quick=ClinicalStatement.statementDateTime; workflow=Event.recorded


<a id="DeviceUsage.usageStatus"></a>

## DeviceUsage.usageStatus
The status of the device usage, for example always, sometimes, never. This is not the same as the status of the statement

**Definition:** The status of the device usage, for example always, sometimes, never. This is not the same as the status of the statement.

**Cardinality:** 0..1

**Type:** [CodeableConcept](/CodeableConcept)

**Binding:** required:[deviceusage-status](/valueset-deviceusage-status)


<a id="DeviceUsage.usageReason"></a>

## DeviceUsage.usageReason
The reason for asserting the usage status - for example forgot, lost, stolen, broken

**Definition:** The reason for asserting the usage status - for example forgot, lost, stolen, broken.

**Cardinality:** 0..*

**Type:** [CodeableConcept](/CodeableConcept)


<a id="DeviceUsage.adherence"></a>

## DeviceUsage.adherence
How device is being used

**Definition:** This indicates how or if the device is being used.

**Cardinality:** 0..1

**Type:** [BackboneElement](/BackboneElement)


<a id="DeviceUsage.adherence.code"></a>

## DeviceUsage.adherence.code
always | never | sometimes

**Definition:** Type of adherence.

**Cardinality:** 1..1

**Type:** [CodeableConcept](/CodeableConcept)

**Binding:** example:[deviceusage-adherence-code](/valueset-deviceusage-adherence-code)

**Mappings:** rim=NA


<a id="DeviceUsage.adherence.reason"></a>

## DeviceUsage.adherence.reason
lost | stolen | prescribed | broken | burned | forgot

**Definition:** Reason for adherence type.

**Cardinality:** 1..*

**Type:** [CodeableConcept](/CodeableConcept)

**Binding:** example:[deviceusage-adherence-reason](/valueset-deviceusage-adherence-reason)

**Mappings:** rim=NA


<a id="DeviceUsage.informationSource"></a>

## DeviceUsage.informationSource
Who made the statement

**Definition:** Who reported the device was being used by the patient.

**Comments:** Group is only allowed in the circumstance where the group represents a family or a household, and should not represent groups of Practitioners where other more specific resources can be used instead.

**Cardinality:** 0..1

**Type:** Reference([Patient](/Patient), [Practitioner](/Practitioner), [PractitionerRole](/PractitionerRole), [RelatedPerson](/RelatedPerson), [Organization](/Organization), [Group](/Group))

**Summary:** true

**Mappings:** workflow=Event.performer.actor; w5=FiveWs.actor; workflow=Event.reported[x]


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

## DeviceUsage.device
Code or Reference to device used

**Definition:** Code or Reference to device used.

**Cardinality:** 1..1

**Type:** [CodeableReference](/CodeableReference)

**Summary:** true

**Mappings:** w5=FiveWs.actor; workflow=Event.product


<a id="DeviceUsage.reason"></a>

## DeviceUsage.reason
Why device was used

**Definition:** Reason or justification for the use of the device. A coded concept, or another resource whose existence justifies this DeviceUsage.

**Comments:** When the status is not done, the reason code indicates why it was not done.

**Cardinality:** 0..*

**Type:** [CodeableReference](/CodeableReference)

**Summary:** true

**Mappings:** workflow=Event.reason; w5=FiveWs.why[x]; rim=.outboundRelationship[typeCode=RSON].target; quick=Action.indication.reason


<a id="DeviceUsage.bodyStructure"></a>

## DeviceUsage.bodyStructure
Target body structure

**Definition:** Indicates the anatomic location on the subject's body where the device was used (i.e. the target).

**Requirements:** Knowing where the device is targeted is important for tracking if multiple sites are possible. If more information than just a code is required, use the extension [[[http://hl7.org/fhir/StructureDefinition/bodySite]]].

**Cardinality:** 0..1

**Type:** [CodeableReference](/CodeableReference)

**Binding:** example:[body-site](/valueset-body-site)

**Summary:** true

**Mappings:** workflow=Event.note; rim=targetSiteCode


<a id="DeviceUsage.note"></a>

## DeviceUsage.note
Addition details (comments, instructions)

**Definition:** Details about the device statement that were not represented at all or sufficiently in one of the attributes provided in a class. These may include for example a comment, an instruction, or a note associated with the statement.

**Cardinality:** 0..*

**Type:** [Annotation](/Annotation)

**Mappings:** workflow=Event.note; quick=ClinicalStatement.additionalText