ICD-10 Code I70.569 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, unspecified extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.569 – Atherosclerosis of nonautologous biological bypass graft(s) of the extremities with gangrene, unspecified extremity
What it is
This code identifies atherosclerotic narrowing or blockage in a nonautologous biological bypass graft in an extremity, with associated gangrene. Use it when the record documents gangrene but does not specify which limb is affected.
Clinical signs
Typical findings include poor limb perfusion, ischemic tissue changes, and gangrenous skin or soft-tissue necrosis. Clinical features vary; refer to documentation for the affected graft and extent of limb involvement.
When to use this code
Use I70.569 when the provider documents atherosclerosis affecting a nonautologous biological bypass graft in an arm or leg and also documents gangrene. Choose this code when the extremity is not specified in the note, operative report, or assessment. If the chart identifies the left or right limb, use the more specific code instead.
Do not use for
Do not use this code for native artery atherosclerosis, graft problems without gangrene, or gangrene without documented atherosclerotic graft disease. Check documentation if the graft type or limb laterality is unclear.
Coding tip
Confirm both the graft type and the presence of gangrene before assigning I70.569.