ICD-10 Code I70.691 – Other atherosclerosis of nonbiological bypass graft(s) of the extremities, right leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.691 – Other atherosclerosis of nonbiological bypass graft(s) of the extremities, right leg
What it is
This code identifies atherosclerotic narrowing or blockage in a nonbiological bypass graft supplying the right leg. Use it when documentation specifies the graft is affected and the right lower extremity is the site.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced leg perfusion, exertional pain, rest pain, diminished pulses, or graft-related ischemic symptoms noted on exam or imaging.
When to use this code
Use this code when the provider documents atherosclerosis involving a nonbiological bypass graft in the right leg. It applies when the record identifies the graft as the diseased vessel, not just native artery disease.
Choose it for postoperative or vascular follow-up notes, imaging reports, or specialist assessments that clearly state graft atherosclerosis. Check documentation if the laterality or graft type is not explicit.
Do not use for
Do not use this code for atherosclerosis of native arteries, unspecified bypass graft disease, or disease in the left leg. Check documentation if the graft is biologic or the site is not the right extremity.
Coding tip
Confirm both laterality and graft material before coding, because this code is specific to a nonbiological graft in the right leg.