S00.221A
S00.221A — Blister (nonthermal) of right eyelid and periocular area, initial encounter
Billable / specific codeICD-10-CMright
S00.221A is a billable, specific ICD-10-CM code for blister (nonthermal) of right eyelid and periocular area, 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 category S00
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
S00.221A 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
S00.221A 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.
- A56459Billing and Coding: Debridement Services
- A56900Billing and Coding: Immunizations
- A57068Billing and Coding: Ocular Photography - External
Related codes at this level
Codes that share S00.221. If S00.221A is not quite right, the correct code is usually one of these.
Questions about S00.221A
- Is S00.221A a billable ICD-10-CM code?
- Yes. S00.221A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S00.221A 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).