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I70.203

I70.203: Unspecified atherosclerosis of native arteries of extremities, bilateral legs

Billable / specific codeICD-10-CMbilateral

I70.203 is a billable, specific ICD-10-CM code for unspecified atherosclerosis of native arteries of extremities, bilateral legs. It is valid for submission on a claim.

Check I70.203 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above I70.203

Not part of this code, but both may be coded when both are present.

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 I70.203

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • I77.6Arteritis, unspecified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

I70.203 is named in 20 Medicare coverage policies: 20 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52996Billing and Coding: Routine Foot Care
  • A56232Billing and Coding: Foot Care
  • A56476Billing and Coding: Cardiac Radionuclide Imaging
  • A56675Billing and Coding: Homocysteine Level, Serum

Alphabetic index entries that lead here

  • Arteriosclerosis, arteriosclerotic›extremities›leg›bilateral

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under I70.20

ICD-10-CMFY2027· effective October 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.