ICD-10 Code I70.635 – Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of foot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.635 – Atherosclerosis of nonbiological bypass graft(s) of the right leg with ulceration of other part of foot
What it is
This code describes atherosclerosis affecting a nonbiological bypass graft in the right leg, with an associated ulcer on another part of the foot. It indicates graft-related arterial disease plus tissue breakdown in the same limb.
Clinical signs
Typical findings include diminished foot perfusion, poor wound healing, and an ulcer on the foot that is not limited to the heel or toe. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents atherosclerosis in a nonbiological bypass graft of the right leg and an ulcer of another part of the foot. The ulcer location must be specified in the note, and the right-sided graft involvement should be documented. Check documentation if the ulcer site or graft type is unclear.
Do not use for
Do not use this code for native artery atherosclerosis without graft involvement, or for ulcers without documented atherosclerosis of the bypass graft. Do not assume laterality or ulcer location.
Coding tip
Verify graft type, laterality, and exact ulcer location before assigning I70.635.