ICD-10 Code I70.369 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, unspecified extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.369 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene, unspecified extremity
What it is
This code identifies atherosclerotic narrowing or blockage in an unspecified bypass graft in an extremity, with gangrene present. Use it when the record does not specify the graft type or which extremity is affected.
Clinical signs
Typical findings include poor limb perfusion, ischemic skin changes, and tissue necrosis consistent with gangrene. Clinical features vary; refer to documentation for the affected graft and limb details.
When to use this code
Use this code when the provider documents atherosclerosis in a bypass graft of an arm or leg and also documents gangrene. It applies when the graft type is unspecified and the extremity is not identified. If the note names a specific graft or limb, choose the more precise code.
Do not use for
Do not use this code for native-vessel peripheral arterial disease without a bypass graft. Also avoid it when gangrene is absent or when documentation identifies a different graft type or a different extremity. Check documentation.
Coding tip
Confirm both the bypass graft involvement and the gangrene, then code the most specific graft and extremity available.