MCMCB Pro
S65.492A

S65.492AOther specified injury of blood vessel of left thumb, initial encounter

Billable / specific codeICD-10-CMleft

S65.492A is a billable, specific ICD-10-CM code for other specified injury of blood vessel of left thumb, 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 S65

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

S65.492A 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

S65.492A 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.

  • A57593Billing and Coding: Non-Invasive Peripheral Arterial Vascular Studies

Related codes at this level

Codes that share S65.492. If S65.492A is not quite right, the correct code is usually one of these.

Questions about S65.492A

Is S65.492A a billable ICD-10-CM code?
Yes. S65.492A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S65.492A 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).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.