ICD-10 Code I70.799 – Other atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.799 – Other atherosclerosis of other type of bypass graft(s) of the extremities, unspecified extremity
What it is
This code identifies atherosclerotic narrowing or blockage in a bypass graft in an extremity when the graft type is other than the common categories and the affected limb is not specified. Use it for graft disease, not native artery disease.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include reduced graft flow, limb ischemia, claudication, rest pain, or diminished pulses in the bypassed extremity.
When to use this code
Use this code when the provider documents atherosclerosis affecting an extremity bypass graft, but the graft is not described as a vein or prosthetic graft and the limb is not identified. It also fits when the record clearly states graft atherosclerosis without more specific detail.
If the note names the extremity, code that laterality when available. If the graft type or diagnosis is unclear, check documentation before assigning I70.799.
Do not use for
Do not use this code for atherosclerosis of native arteries, graft infection, thrombosis without atherosclerosis, or occlusion due to mechanical failure. Check documentation if the record describes another graft complication.
Coding tip
Assign I70.799 only when the chart supports atherosclerosis in an extremity bypass graft and no more specific graft or laterality code is documented.