I70.233 — Atherosclerosis of native arteries of right leg with ulceration of ankle
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.
Other codes that can never be billed with I70.233
These codes carry an Excludes1 note pointing at I70.233. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I70.233 alone.
- I77.6Arteritis, unspecified
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, arteriosclerotic›extremities›leg›right›with›ulceration›ankle
- Arteriosclerosis, arteriosclerotic›with›critical limb ischemia›leg›right›with›ulceration›ankle
Code history
I70.233 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 I70.23. If I70.233 is not quite right, the correct code is usually one of these.
- I70.231Atherosclerosis of native arteries of right leg with ulceration of thigh
- I70.232Atherosclerosis of native arteries of right leg with ulceration of calf
- I70.234Atherosclerosis of native arteries of right leg with ulceration of heel and midfoot
- I70.235Atherosclerosis of native arteries of right leg with ulceration of other part of foot
- I70.238Atherosclerosis of native arteries of right leg with ulceration of other part of lower leg
- I70.239Atherosclerosis of native arteries of right leg with ulceration of unspecified site
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).