ICD-10 Code I70.798 – Other atherosclerosis of other type of bypass graft(s) of the extremities, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.798 – Other atherosclerosis of other type of bypass graft(s) of the extremities, other extremity
What it is
This code identifies atherosclerotic narrowing or blockage in a bypass graft supplying an extremity, when the graft type is not otherwise specified and the affected limb is the other extremity. Use it for graft disease, not native artery disease.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include reduced limb perfusion, diminished pulses, claudication, ischemic pain, or graft stenosis noted on imaging or vascular evaluation.
When to use this code
Use I70.798 when the provider documents atherosclerosis affecting a bypass graft in an extremity other than the leg or arm specifically named by another code, and the graft type is “other.” It applies when the record clearly links the disease to the bypass graft. Check documentation if the note only says peripheral arterial disease or native vessel atherosclerosis.
Do not use for
Do not use this code for atherosclerosis of the native arteries, or when the bypass graft type and location are documented more specifically elsewhere. Check documentation if the record does not clearly identify graft involvement.
Coding tip
Code the graft site and laterality exactly as documented, and confirm that the physician describes atherosclerosis of the bypass graft rather than general vascular insufficiency.