ICD-10 Code I70.408 – Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.408 – Unspecified atherosclerosis of autologous vein bypass graft(s) of the extremities, other extremity
What it is
This code describes atherosclerotic narrowing or blockage in an autologous vein bypass graft in an extremity, when the affected limb is other than the more specific sites named in the code set. Use it when documentation identifies graft disease but does not specify the exact limb detail needed for a more precise code.
Clinical signs
Patients may have reduced limb perfusion, exertional pain, rest pain, coolness, or diminished pulses. Clinical features vary; refer to documentation and vascular imaging or operative findings when available.
When to use this code
Use I70.408 when the record states atherosclerosis involving an autologous vein bypass graft in an extremity and the site is documented as other extremity. It is also appropriate when the provider documents graft atherosclerosis without further anatomic specificity. Check documentation if the limb or graft type is unclear.
Do not use for
Do not use this code for native artery atherosclerosis, prosthetic graft disease, or bypass graft complications without atherosclerosis. If the documentation supports a more specific extremity or graft code, report that code instead.
Coding tip
Verify both the graft material and the exact extremity location before coding, because laterality and graft type can change the ICD-10-CM code.