ICD-10-CM › Chapter 20 External causes of morbidity › Y90-Y99
Y90-Y99 - Supplementary factors related to causes of morbidity classified elsewhere
396 ICD-10-CM codes sit in this section, of which 334 are billable in FY2027. Every one has a page giving the years it was valid and what to use instead when it is not.
- 396 codes
- 334 billable FY2027
- 62 not billable, retired or subdivided
- 5 categories
Categories
Each of these is a three-character category. Most are not billable on their own - the billable code is one of the children listed on its page.
| Code | Description | Status |
|---|---|---|
| Y90 | Evidence of alcohol involvement determined by blood alcohol level | Not billable |
| Y92 | Place of occurrence of the external cause | Not billable |
| Y93 | Activity codes | Not billable |
| Y95 | Nosocomial condition | Valid |
| Y99 | External cause status | Not billable |
Or browse all ICD-10-CM codes by first character, check a list of codes with the batch validity checker, or see what changed in each release.