MCMCB Pro
I65.02

I65.02Occlusion and stenosis of left vertebral artery

Billable / specific codeICD-10-CMleft

I65.02 is a billable, specific ICD-10-CM code for occlusion and stenosis of left vertebral artery. It is valid for submission on a claim.

Risk adjustment

I65.02 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

I65.02 is named in 41 Medicare coverage policies 41 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
  • A52992Billing and Coding: Non-Invasive Cerebrovascular Arterial Studies
  • A56423Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing
  • A56423Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing

Related codes at this level

Codes that share I65.0. If I65.02 is not quite right, the correct code is usually one of these.

Questions about I65.02

Is I65.02 a billable ICD-10-CM code?
Yes. I65.02 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I65.02 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Cerebrovascular diseases (I60-I69).
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.