ICD-10 Code I70.74 – Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.74 – Atherosclerosis of other type of bypass graft(s) of the left leg with ulceration
What it is
This code identifies atherosclerotic narrowing or blockage in an other-type bypass graft in the left leg, with an associated ulcer. Use it when documentation links the graft disease to ulceration on the left lower extremity.
Clinical signs
Findings may include poor limb perfusion, diminished pulses, ischemic skin changes, and a nonhealing ulcer on the left leg. Clinical features vary; refer to documentation.
When to use this code
Use I70.74 when the provider documents atherosclerosis affecting a bypass graft in the left leg and specifically notes ulceration. The ulcer should be part of the documented vascular condition, not a separate unrelated wound. Check documentation if the graft type or side is unclear.
Do not use for
Do not use this code for native vessel atherosclerosis without a bypass graft, or for ulcers that are not documented as related to the graft disease. Check documentation for the correct laterality and graft type.
Coding tip
Confirm the graft is “other type” and the ulcer is documented on the left leg before assigning I70.74.