| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  DeviceAssociation | ΣD | DomainResource | A record of association or dissociation of a device with a patient Elements defined in Ancestors: id, meta, implicitRules, language, text, contained, extension, modifierExtension | |
  identifier | Σ | 0..* | Identifier | Instance identifier |
 device | Σ | 1..1 | Reference(Device) | Reference to the devices associated with the patient or group |
| category | Σ | 0..* | CodeableConcept | Describes the relationship between the device and subject |
| status | Σ | 1..1 | CodeableConcept | implanted | explanted | attached | entered-in-error | unknown Binding: DeviceAssociation Status Codes (Required) |
| statusReason | Σ | 0..* | CodeableConcept | The reasons given for the current association status Binding: DeviceAssociation Status Reason Codes (Required) |
| subject | Σ | 0..1 | Reference(Patient | Group | Practitioner | RelatedPerson | Device) | The individual, group of individuals or device that the device is on or associated with |
| bodyStructure | Σ | 0..1 | Reference(BodyStructure) | Current anatomical location of the device in/on subject |
| period | Σ | 0..1 | Period | Begin and end dates and times for the device association |
  operation | Σ | 0..* | BackboneElement | The details about the device when it is in use to describe its operation |
 status | Σ | 1..1 | CodeableConcept | Device operational condition Binding: FHIR Device Association Operation Status (Example) |
| operator | Σ | 0..* | Reference(Patient | Practitioner | RelatedPerson) | The individual performing the action enabled by the device |
| period | Σ | 0..1 | Period | Begin and end dates and times for the device's operation |
| Documentation for this format | ||||