Supplementary factors related to causes of morbidity classified elsewhere (Y90-Y99) notes These categories may be used to provide supplementary information concerning causes of morbidity. They are not to be used for single-condition coding. |
| Y90: Evidence of alcohol involvement determined by blood alcohol level |
| Y92: Place of occurrence of the external cause |
| Y93: Activity codes |
| Y95: Nosocomial condition |
| Y99: External cause status |