ICD-10 Code I70.501 – Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, right leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.501 – Unspecified atherosclerosis of nonautologous biological bypass graft(s) of the extremities, right leg
What it is
This code identifies atherosclerotic narrowing or blockage in a nonautologous biological bypass graft in the right leg. Use it when the record says the graft is affected but does not specify the exact type of atherosclerosis.
Clinical signs
Findings may include reduced leg perfusion, exertional leg pain, rest pain, or diminished pulses. Clinical features vary; refer to documentation, imaging, or vascular studies supporting graft disease.
When to use this code
Use I70.501 when the provider documents atherosclerosis involving a biological bypass graft in the right lower extremity and does not give a more specific subtype. It is appropriate for follow-up visits, vascular evaluations, or imaging-confirmed graft disease. Code the right leg location exactly as documented.
Do not use for
Do not use this code for native artery atherosclerosis without graft involvement, or for graft problems caused by infection, thrombosis, or mechanical failure unless the provider also documents atherosclerosis. Check documentation.
Coding tip
Verify that the record identifies both the biological graft and the right leg before assigning I70.501.