ICD-10 Code I70.26 – Atherosclerosis of native arteries of extremities with gangrene (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.26 – Atherosclerosis of native arteries of extremities with gangrene
What it is
I70.26 identifies atherosclerosis in the native arteries of an extremity when gangrene is present. Use it for ischemic arterial disease affecting arms or legs, not grafts or bypass vessels.
Clinical signs
Findings usually include poor peripheral perfusion, tissue discoloration, and necrosis consistent with gangrene. Clinical features vary; refer to documentation for the affected extremity and whether the disease is chronic or acute.
When to use this code
Use this code when the provider documents atherosclerosis of native arteries in an extremity with gangrene. It fits cases where gangrenous tissue is attributed to arterial occlusive disease. Confirm the documentation names the native vessel disease and the gangrene together.
Do not use for
Do not use it for atherosclerosis without gangrene, or when the disease involves bypass grafts or other nonnative vessels. Check documentation if the record does not clearly link gangrene to native-artery atherosclerosis.
Coding tip
Verify the extremity and vessel type in the note, and code gangrene only when it is explicitly documented with native-artery atherosclerosis.