Is I70.209 a billable ICD-10-CM code?

Yes. I70.209 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does I70.209 sit in the tabular list?

Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).

I70.209

I70.209 — Unspecified atherosclerosis of native arteries of extremities, unspecified extremity

Billable / specific codeICD-10-CM

I70.209 is a billable, specific ICD-10-CM code for unspecified atherosclerosis of native arteries of extremities, unspecified extremity. It is valid for submission on a claim.

Excludes2 inherited from the categories above I70.209

Also inherited, and the opposite of Excludes1: these conditions are not part of I70.209, but a patient can have both, so you may code both.

Written on I70.2 — Atherosclerosis of native arteries of the extremities

atherosclerosis of bypass graft of extremities (I70.30-I70.79)

Written on I70 — Atherosclerosis

arteriosclerotic cardiovascular disease (I25.1-)
arteriosclerotic heart disease (I25.1-)
atheroembolism (I75.-)
cerebral atherosclerosis (I67.2)
coronary atherosclerosis (I25.1-)
mesenteric atherosclerosis (K55.1)
precerebral atherosclerosis (I67.2)
primary pulmonary atherosclerosis (I27.0)

Other codes that can never be billed with I70.209

These codes carry an Excludes1 note pointing at I70.209. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I70.209 alone.

I77.6Arteritis, unspecified

Risk adjustment

I70.209 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

I70.209 is named in 5 Medicare coverage policies — 5 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
A56680Billing and Coding: Routine Foot Care
A57174Billing and Coding: MolDX: Pharmacogenomics Testing
A57188Billing and Coding: Routine Foot Care

How I70.209 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 I70.209.

Arteriosclerosis, arteriosclerotic›extremities(native arteries)
Arteriosclerosis, arteriosclerotic›extremities›leg

Code history

I70.209 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 I70.20. If I70.209 is not quite right, the correct code is usually one of these.

Questions about I70.209

Is I70.209 a billable ICD-10-CM code?: Yes. I70.209 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I70.209 sit in the tabular list?: Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).