ICD-10 Code I70.263 – Atherosclerosis of Native Arteries of Extremities with Gangrene, Bilateral Legs (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.263 – Atherosclerosis of native arteries of extremities with gangrene, bilateral legs
What it is
This code identifies atherosclerotic narrowing or blockage in the native arteries of both lower extremities, complicated by gangrene. It applies when the disease affects the legs and tissue death is documented.
Clinical signs
Typical findings include peripheral arterial disease with poor limb perfusion and gangrenous tissue changes in both legs. Clinical features vary; refer to documentation.
When to use this code
Use I70.263 when the record clearly documents atherosclerosis of native arteries in both legs and gangrene is present. The bilateral lower-extremity involvement must be explicit or supported by the note. If the site or laterality is unclear, check documentation before coding.
Do not use for
Do not use this code for atherosclerosis without gangrene, or for disease limited to one leg. Do not assign it when gangrene is from another cause and the arterial diagnosis is not documented.
Coding tip
Verify that both laterality and gangrene are documented together; missing either detail can change the code selection.