| Code | Display | Definition |
| wrong-patient | Wrong Patient | The adverse event pertains to an event involving the wrong patient, who was not the intended subject. |
| procedure-mishap | Procedure Mishap | The adverse event pertains to a procedure mishap. |
| medication-mishap | Medication Mishap | The adverse event pertains to a medication mishap, such as wrong dose, route, rate, or duration of administration. |
| device | Device | The adverse event pertains to a device. |
| unsafe-physical-environment | Unsafe Physical Environment | The adverse event pertains to an unsafe physical environment. |
| hospital-aquired-infection | Hospital Acquired Infection | The adverse event pertains to a hospital acquired infection. |
| wrong-body-site | Wrong Body Site | The adverse event pertains to the wrong body site. |