S66.221D — Laceration of extensor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter
S66.221D is a billable, specific ICD-10-CM code for laceration of extensor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter. It is valid for submission on a claim.
7th character "D" — subsequent encounter
The appropriate 7th character is to be added to each code from category S66
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
S66.221D 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
S66.221D is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A53058Billing and Coding: Home Health Physical Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
- A56459Billing and Coding: Debridement Services
- A57311Billing and Coding: Physical Therapy - Home Health
Related codes at this level
Codes that share S66.221. If S66.221D is not quite right, the correct code is usually one of these.
Questions about S66.221D
- Is S66.221D a billable ICD-10-CM code?
- Yes. S66.221D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S66.221D sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the wrist, hand and fingers (S60-S69).