S55.901A — Unspecified injury of unspecified blood vessel at forearm level, right arm, initial encounter
S55.901A is a billable, specific ICD-10-CM code for unspecified injury of unspecified blood vessel at forearm level, right arm, 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 S55
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
S55.901A 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
S55.901A is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56758Billing and Coding: Non-Invasive Vascular Studies
Related codes at this level
Codes that share S55.901. If S55.901A is not quite right, the correct code is usually one of these.
Questions about S55.901A
- Is S55.901A a billable ICD-10-CM code?
- Yes. S55.901A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S55.901A sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the elbow and forearm (S50-S59).