ICD-10 Code I70.634 – Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of heel and midfoot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.634 – Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of heel and midfoot
What it is
This code identifies atherosclerotic narrowing in a nonbiological bypass graft in the right leg, with an ulcer on the heel and midfoot. Use it when the record links the graft disease to that specific ulcer location.
Clinical signs
Common findings include reduced blood flow to the right leg, poor wound healing, and a chronic ulcer on the heel or midfoot. Clinical features vary; refer to documentation for graft type, laterality, and ulcer site.
When to use this code
Use this code when documentation states atherosclerosis affects a nonbiological bypass graft in the right leg and the patient has an ulcer of the heel and midfoot. The ulcer location must be documented as heel and midfoot, not another foot site. If the graft is biological or the side is not right, check documentation.
Do not use for
Do not use this code for native artery atherosclerosis without a bypass graft, or for ulcers not specified as heel and midfoot. Do not assign it if the record does not confirm a nonbiological graft.
Coding tip
Verify the graft type, right-leg laterality, and exact ulcer location before coding; the site detail drives the final code.