MCMCB Pro
I70.561

I70.561Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, right leg

Billable / specific codeICD-10-CMright

I70.561 is a billable, specific ICD-10-CM code for atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, right leg. It is valid for submission on a claim.

Risk adjustment

I70.561 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 263 Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene1.118 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

I70.561 is named in 44 Medicare coverage policies 44 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
  • A53057Billing and Coding: Home Health Occupational Therapy
  • A53058Billing and Coding: Home Health Physical Therapy
  • A53064Billing and Coding: Outpatient Occupational Therapy

How I70.561 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 I70.561.

  • Arteriosclerosis, arterioscleroticextremitiesbypass graftnonautologous biological graftlegrightwithgangrene(and intermittent claudication, rest pain and ulcer)
  • Arteriosclerosis, arterioscleroticwithcritical limb ischemiabypass graftnonautologous biological graftlegrightwithgangrene(and intermittent claudication, rest pain, and ulcer)

Related codes at this level

Codes that share I70.56. If I70.561 is not quite right, the correct code is usually one of these.

Questions about I70.561

Is I70.561 a billable ICD-10-CM code?
Yes. I70.561 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does I70.561 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.