ICD-10 Code I70.45 – Atherosclerosis of autologous vein bypass graft(s) of other extremity with ulceration (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.45 – Atherosclerosis of autologous vein bypass graft(s) of other extremity with ulceration
What it is
This code identifies atherosclerotic narrowing or blockage in an autologous vein bypass graft in an extremity other than the leg, with associated ulceration. Use it when the graft supplies blood to the limb and the record documents ulceration.
Clinical signs
Findings may include reduced graft flow, limb ischemia, and an ulcer over the affected extremity. Clinical features vary; refer to documentation for the graft location and whether the ulcer is linked to the atherosclerotic disease.
When to use this code
Use I70.45 when the provider documents atherosclerosis in an autologous vein bypass graft of another extremity and also documents ulceration. The ulcer must be part of the coded condition, not a separate unrelated skin wound. Check documentation if the graft type or extremity is unclear.
Do not use for
Do not use this code for native vessel atherosclerosis, nonautologous grafts, or bypass graft disease without ulceration. Check documentation if the ulcer has another cause or if the extremity is not “other” as defined in the record.
Coding tip
Confirm both the autologous vein graft and ulceration are explicitly documented before assigning I70.45.