T79.A21S
T79.A21S — Traumatic compartment syndrome of right lower extremity, sequela
Billable / specific codeICD-10-CMPOA exemptright
T79.A21S is a billable, specific ICD-10-CM code for traumatic compartment syndrome of right lower extremity, sequela. It is valid for submission on a claim.
7th character "S" — sequela
The appropriate 7th character is to be added to each code from category T79
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T79.A21S 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
T79.A21S is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53057Billing and Coding: Home Health Occupational Therapy
- A53058Billing and Coding: Home Health Physical Therapy
- A53064Billing and Coding: Outpatient Occupational Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
Related codes at this level
Codes that share T79.A21. If T79.A21S is not quite right, the correct code is usually one of these.
Questions about T79.A21S
- Is T79.A21S a billable ICD-10-CM code?
- Yes. T79.A21S is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T79.A21S sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Certain early complications of trauma (T79).