ICD-10 Code I70.648 – Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of other part of lower leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.648 – Atherosclerosis of nonbiological bypass graft(s) of the left leg with ulceration of other part of lower leg
What it is
This code identifies atherosclerotic narrowing or blockage in a nonbiological bypass graft in the left leg, with an associated ulcer on another part of the lower leg. Use it when the graft is the affected vessel and the ulcer is documented.
Clinical signs
Clinical features may include poor limb perfusion, diminished pulses, leg pain, skin changes, or a nonhealing lower-leg ulcer. Clinical features vary; refer to documentation.
When to use this code
Use I70.648 when the record clearly states atherosclerosis involving a nonbiological bypass graft in the left leg and an ulcer on another part of the lower leg. The documentation should link the ulcer to the vascular disease when applicable. Choose this code only when the laterality and ulcer location match the chart.
Do not use for
Do not use it for native artery atherosclerosis, graft disease on the right leg, or ulcers without documented atherosclerotic graft involvement. Check documentation if the graft type, side, or ulcer site is unclear.
Coding tip
Verify the graft is nonbiological and confirm the ulcer site before assigning this code.