| Categories | Definition |
---|---|---|
Potential preventability [14] | Definitely preventable | NSa |
 | Probably preventable | NSa |
 | Probably not preventable | NSa |
 | Definitely not preventable | NSa |
Potential severity [15] | Minor | No injury, nor increased length of stay nor increased level of care. |
 | Moderate | Increased length of stay or increased level of care for 1 or 2 patients. |
 | Major | Permanent lessening of bodily functioning, disfigurement, surgical intervention required, increased length of stay for 3 or more patients, increased level of care for 3 or more patients. |
 | Catastrophic | Death or major permanent loss of function, suicide, rape, hemolytic transfusion reaction. Surgery/procedure on the wrong patient or wrong body part, infant abduction or infant discharge to the wrong family. |
Preventable ADEb | Injuries resulting from an error at any stage throughout the medication process. | |
 | Near misses | Errors detected and intercepted before any harm is done. |