ICD-10 Code I70.36 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.36 – Atherosclerosis of unspecified type of bypass graft(s) of the extremities with gangrene
What it is
This code identifies atherosclerotic disease in an unspecified bypass graft supplying an extremity, with gangrene present. Use it when the documentation links the graft disease to tissue necrosis from poor blood flow.
Clinical signs
Typical findings include ischemic limb changes, nonhealing wounds, skin discoloration, and gangrene affecting toes, foot, or other extremity tissue. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents atherosclerosis in a bypass graft of an extremity and also documents gangrene. It is appropriate when the graft type is not specified and the record supports arterial occlusive disease causing gangrene. Check documentation if laterality or graft type is unclear.
Do not use for
Do not use this code for atherosclerosis without gangrene, or for gangrene not linked to the bypass graft disease. Do not assume it applies to native vessels or to a specific graft type unless documented.
Coding tip
Confirm both the bypass graft involvement and the gangrene diagnosis in the same record before assigning I70.36.