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.
= Must Support, = Is Modifier, = QiCore defined extension
| Field | Card. | Type | Description | 
|---|---|---|---|
| status | 1..1 | String | A code representing the patient or other source's judgment about the state of the device used that this statement is about.  Generally this will be active or completed. Binding: A coded concept indicating the current status of a the Device Usage (required)  | 
| subject | 1..1 | Patient | The patient who used the device. | 
| whenUsed | 0..1 | Interval<DateTime> | The time period over which the device was used. | 
| timing[x] | 0..1 | Timing | Interval<DateTime> | DateTime | How often the device was used. | 
| recordedOn | 0..1 | DateTime | The time at which the statement was made/recorded. | 
| source | 0..1 | Patient | Practitioner | RelatedPerson | Who reported the device was being used by the patient. | 
| device | 1..1 | Device | The details of the device used. | 
| indication | 0..* | List<Concept> | Reason or justification for the use of the device. Binding: This value set includes all the "Clinical finding" [SNOMED CT](http://snomed.info/sct) codes - concepts where concept is-a 404684003 (Clinical finding (finding)). (preferred)  | 
| bodySite | 0..1 | Concept | Indicates the site on the subject's body where the device was used ( i.e. the target site). Binding: This value set includes all codes from SNOMED CT where concept is-a 442083009 (Anatomical or acquired body site (body structure)). (example)  |