ICD-10 Code I70.462 – Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, left leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.462 – Atherosclerosis of autologous vein bypass graft(s) of the extremities with gangrene, left leg
What it is
This code identifies atherosclerotic disease in an autologous vein bypass graft in the left leg, with gangrene present. It applies when the graft itself is affected and tissue loss from poor blood flow is documented.
Clinical signs
Findings may include ischemic pain, cool or pale skin, weak pulses, nonhealing wounds, or blackened necrotic tissue in the left leg. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents atherosclerosis of an autologous vein bypass graft in the left lower extremity and specifies gangrene. The record should clearly link the graft disease to the left leg and the gangrenous complication. Check documentation if laterality or graft type is unclear.
Do not use for
Do not use this code for native artery atherosclerosis without bypass-graft involvement, or for graft disease without gangrene. If the chart does not specify an autologous vein graft, confirm the exact graft type.
Coding tip
Confirm both the graft source and the left-leg laterality before assigning I70.462.