ICD-10 Code I70.498 – Other atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.498 – Other atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity
What it is
This code identifies atherosclerosis affecting an autologous vein bypass graft in an extremity other than the upper or lower leg specified elsewhere. It means the graft has plaque-related narrowing or disease documented in the bypass conduit.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced graft patency, diminished distal perfusion, or ischemic symptoms in the affected limb if the graft is clinically significant.
When to use this code
Use I70.498 when the provider documents atherosclerosis in an autologous vein bypass graft of an extremity and specifies the site as “other extremity.” Assign it only when the record clearly identifies the bypass graft as the affected vessel. Check documentation if the graft type or limb location is unclear.
Do not use for
Do not use this code for native artery atherosclerosis, nonautologous graft disease, or unspecified extremity graft sites. If the documentation does not confirm an autologous vein bypass graft, check documentation.
Coding tip
Verify both the graft material and the exact extremity location before assigning I70.498.