ICD-10 Code I70.432 – Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of calf (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.432 – Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of calf
What it is
This code identifies atherosclerotic narrowing in an autologous vein bypass graft in the right leg, with an ulcer on the calf. Use it when the graft disease and ulcer are both documented.
Clinical signs
Findings may include poor graft perfusion, diminished pulses, claudication, or ischemic skin breakdown. Clinical features vary; refer to documentation for the graft location and ulcer site.
When to use this code
Use I70.432 when the provider documents atherosclerosis affecting an autologous vein bypass graft in the right leg and specifically links a calf ulcer to that condition. The record should support both the bypass graft and the ulcer location. If the ulcer type or laterality is unclear, check documentation before coding.
Do not use for
Do not use this code for native artery atherosclerosis without a bypass graft, or for ulcers not associated with the documented graft disease. Check documentation if the graft type, laterality, or ulcer site is missing.
Coding tip
Verify that the bypass graft is autologous vein and that the ulcer is documented on the calf of the right leg.