S00.90 — Unspecified superficial injury of unspecified part of head
S00.90 is a non-billable header ICD-10-CM code for unspecified superficial injury of unspecified part of head. 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 S00
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
S00.90 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.
How S00.90 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to S00.90.
- Injury›superficial NEC›head
Code to one of these instead S00.90
3 child codes. Green means billable.
Related codes at this level
Codes that share S00.9. If S00.90 is not quite right, the correct code is usually one of these.
- S00.91Abrasion of unspecified part of head
- S00.92Blister (nonthermal) of unspecified part of head
- S00.93Contusion of unspecified part of head
- S00.94External constriction of unspecified part of head
- S00.95Superficial foreign body of unspecified part of head
- S00.96Insect bite (nonvenomous) of unspecified part of head
- S00.97Other superficial bite of unspecified part of head
Questions about S00.90
- Is S00.90 a billable ICD-10-CM code?
- No. S00.90 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S00.90 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the head (S00-S09).