MCMCB Pro
I70.233

I70.233Atherosclerosis of native arteries of right leg with ulceration of ankle

Billable / specific codeICD-10-CMright

I70.233 is a billable, specific ICD-10-CM code for atherosclerosis of native arteries of right leg with ulceration of ankle. It is valid for submission on a claim.

Risk adjustment

I70.233 risk-adjusts. Under the CMS-HCC V28 model it maps to these categories:

  • HCC 263 Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene1.118 RAF
  • HCC 383 Chronic Ulcer of Skin, Except Pressure, Not Specified as Through to Bone or Muscle0.646 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

I70.233 is named in 61 Medicare coverage policies 59 listing it as supporting medical necessity, and 2 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56566Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
  • A57067Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
  • A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A52996Billing and Coding: Routine Foot Care

How I70.233 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 I70.233.

  • Arteriosclerosis, arterioscleroticextremitieslegrightwithulcerationankle
  • Arteriosclerosis, arterioscleroticwithcritical limb ischemialegrightwithulcerationankle

Related codes at this level

Codes that share I70.23. If I70.233 is not quite right, the correct code is usually one of these.

Questions about I70.233

Is I70.233 a billable ICD-10-CM code?
Yes. I70.233 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I70.233 sit in the tabular list?
Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).
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.