I70.91 — Generalized atherosclerosis
I70.91 is a billable, specific ICD-10-CM code for generalized atherosclerosis. It is valid for submission on a claim.
Excludes2 inherited from the categories above I70.91
Also inherited, and the opposite of Excludes1: these conditions are not part of I70.91, but a patient can have both, so you may code both.
Written on I70.9 — Other and unspecified atherosclerosis
- disorders of pyrophosphate metabolism (E83.82-)
Written on I70 — Atherosclerosis
Other codes that can never be billed with I70.91
These codes carry an Excludes1 note pointing at I70.91. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I70.91 alone.
- I77.6Arteritis, unspecified
Risk adjustment
I70.91 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
I70.91 is named in 19 Medicare coverage policies — 19 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52996Billing and Coding: Routine Foot Care
- A56232Billing and Coding: Foot Care
- A56476Billing and Coding: Cardiac Radionuclide Imaging
- A56675Billing and Coding: Homocysteine Level, Serum
How I70.91 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I70.91.
- Arteriosclerosis, arteriosclerotic›generalized
Code history
I70.91 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share I70.9. If I70.91 is not quite right, the correct code is usually one of these.
Questions about I70.91
- Is I70.91 a billable ICD-10-CM code?
- Yes. I70.91 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I70.91 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).