S90.91
S90.91 — Unspecified superficial injury of ankle
Non-billable headerICD-10-CMunspecified
S90.91 is a non-billable header ICD-10-CM code for unspecified superficial injury of ankle. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category S90
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
S90.91 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead S90.91
3 child codes. Green means billable.
Related codes at this level
Codes that share S90.9. If S90.91 is not quite right, the correct code is usually one of these.
Questions about S90.91
- Is S90.91 a billable ICD-10-CM code?
- No. S90.91 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S90.91 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the ankle and foot (S90-S99).