| 42540-5 | Contributing Factor environment MERSTH |
| 42541-3 | Contributing Factor patient-related MERSTH |
| 42542-1 | Contributing Factor staff-related MERSTH |
| 42543-9 | Contributing Factor delay/Premature MERSTH |
| 42544-7 | Contributing Factor other Narrative MERSTH |
| 42545-4 | Event outcome MERSTH (qualitative) |
| 42546-2 | Event battery.MERS-TH MERSTH |
| 42547-0 | Event MERSTH |
| 42548-8 | Service MERSTH |
| 42549-6 | Event type MERSTH |
| 42550-4 | Event description medication MERSTH |
| 42551-2 | Event description procedure/treatment/surgery MERSTH |
| 42552-0 | Event description food/nutrition MERSTH |
| 42553-8 | Event description fall MERSTH |
| 42554-6 | Event description accident MERSTH |
| 42555-3 | Event Description general nursing care MERSTH |
| 42556-1 | Event description equipment/device MERSTH |
| 42557-9 | Event description laboratory MERSTH |
| 42558-7 | Event description transfusion service MERSTH |
| 42559-5 | Event description administrative MERSTH |
| 42560-3 | Event description complaint MERSTH |
| 42561-1 | Event description environmental hazard/safety MERSTH |
| 42562-9 | Event description crime/intentional harm/Patient disappearance MERSTH |
| 42563-7 | Event description adverse event MERSTH |
| 42564-5 | Contributing Factor technical MERSTH |
| 42565-2 | Contributing Factor organization MERSTH |
| 42566-0 | Contributing Factor communication/Documentation MERSTH |