ICD-10 Code I70.709 – Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.709 – Unspecified atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity
What it is
This code identifies atherosclerosis affecting a bypass graft in an extremity when the graft is not a vein or synthetic graft type specified elsewhere, and the affected extremity is not documented. Use it when the record supports graft disease but lacks more detail.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include reduced graft patency, diminished distal pulses, limb ischemic symptoms, or evidence of graft narrowing on imaging or vascular evaluation.
When to use this code
Use I70.709 when the provider documents atherosclerosis of an other type of bypass graft in an extremity but does not specify the side. It also fits cases where the graft type is described as other than venous or synthetic, and no further detail is available. Check the operative note, vascular study, or assessment for more specific coding options.
Do not use for
Do not use this code for native artery atherosclerosis, venous graft disease, or synthetic bypass graft disease if a more specific code is documented. If the extremity or graft type is known, code that specificity instead.
Coding tip
Query for graft type and laterality whenever the chart only says “bypass graft atherosclerosis.”