ICD-10 Code I70.39 – Other atherosclerosis of unspecified type of bypass graft(s) of the extremities (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.39 – Other atherosclerosis of unspecified type of bypass graft(s) of the extremities
What it is
This code identifies atherosclerotic narrowing or blockage in a bypass graft in an extremity when the graft type is not specified. Use it for graft disease affecting arm or leg circulation, not native arteries.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include reduced limb perfusion, exertional pain, rest pain, coolness, diminished pulses, or graft-related ischemic symptoms.
When to use this code
Use I70.39 when the record documents atherosclerosis involving an unspecified bypass graft of an extremity and does not identify the graft type. It may be supported by imaging, vascular assessment, or operative findings. If the note specifies the graft type, choose the more exact code.
Do not use for
Do not use this code for atherosclerosis of native arteries or for bypass grafts in other body sites. If the documentation names a specific graft type, check documentation and code that option instead.
Coding tip
Verify that the bypass graft is in an extremity and that the documentation does not specify a graft type before assigning I70.39.