| Code | Display | Definition |
| owner | Owner | Owner of the device. |
| custodian | Custodian | The individual or organization who has responsibility for taking care of the device. |
| maintainer | Maintainer | The individual or organization that keeps the device in an appropriate condition. |
| patient | Patient | The patient in which the device is implanted, or to which the device is associated. |
| operator | Operator | The person operating the device. |
| used-by | Used By | The device is used by the referenced subject. |
| assigned-to | Assigned To | The device is assigned to the referenced subject for use or responsibility. |
| leased-by | Leased By | The device is leased by the referenced subject. |
| worn-by | Worn By | The device is worn by the referenced subject. |
| carried-by | Carried By | The device is carried by the referenced subject. |
| monitored-by | Monitored By | The device is monitored by the referenced subject. |
| implanted-in | Implanted In | The device is implanted in the referenced subject. |
| attached-to | Attached To | The device is physically attached to the referenced subject. |
| installed-at | Installed At | The device is installed at the referenced location. |
| located-at | Located At | The device is located at the referenced location. |
| stored-at | Stored At | The device is stored at the referenced location. |
| connected-to | Connected To | The device is connected to the referenced device or entity. |
| controls | Controls | The device controls the referenced device or entity. |
| programs | Programs | The device programs the referenced device or entity. |
| calibrates | Calibrates | The device calibrates the referenced device or entity. |
| maintains | Maintains | The device maintains the referenced device or entity. |
| powers | Powers | The device supplies power to the referenced device or entity. |
| communicates-with | Communicates With | The device communicates with the referenced device or entity. |
| managed-by | Managed By | The device is managed by the referenced subject. |
| in-custody-of | In Custody Of | The device is in the custody of the referenced subject. |
| maintained-by | Maintained By | The device is maintained by the referenced subject. |