S99.921A
S99.921A — Unspecified injury of right foot, initial encounter
Billable / specific codeICD-10-CMright
S99.921A is a billable, specific ICD-10-CM code for unspecified injury of right foot, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from subcategory S99.9
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
S99.921A 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.
Medicare coverage
S99.921A is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52996Billing and Coding: Routine Foot Care
- A56232Billing and Coding: Foot Care
- A56680Billing and Coding: Routine Foot Care
Related codes at this level
Codes that share S99.921. If S99.921A is not quite right, the correct code is usually one of these.
Questions about S99.921A
- Is S99.921A a billable ICD-10-CM code?
- Yes. S99.921A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S99.921A 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).