I70.633 — Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of ankle
I70.633 is a billable, specific ICD-10-CM code for atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of ankle. It is valid for submission on a claim.
Excludes2 inherited from the categories above I70.633
Also inherited, and the opposite of Excludes1: these conditions are not part of I70.633, but a patient can have both, so you may code both.
Written on I70 — Atherosclerosis
Other codes that can never be billed with I70.633
These codes carry an Excludes1 note pointing at I70.633. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading I70.633 alone.
- I77.6Arteritis, unspecified
Risk adjustment
I70.633 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
I70.633 is named in 39 Medicare coverage policies — 37 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
- A53057Billing and Coding: Home Health Occupational Therapy
- A53058Billing and Coding: Home Health Physical Therapy
How I70.633 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 I70.633.
- Arteriosclerosis, arteriosclerotic›extremities›bypass graft›nonbiological graft›leg›right›with›ulceration›ankle
- Arteriosclerosis, arteriosclerotic›with›critical limb ischemia›bypass graft›nonbiological graft›leg›right›with›ulceration›ankle
Code history
I70.633 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 I70.63. If I70.633 is not quite right, the correct code is usually one of these.
- I70.631Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of thigh
- I70.632Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of calf
- I70.634Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of heel and midfoot
- I70.635Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of foot
- I70.638Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of lower leg
- I70.639Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of unspecified site
Questions about I70.633
- Is I70.633 a billable ICD-10-CM code?
- Yes. I70.633 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I70.633 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Diseases of arteries, arterioles and capillaries (I70-I79).