ICD-10 Code I70.338 – Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of other part of lower leg (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.338 – Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration of other part of lower leg
What it is
This code identifies atherosclerotic narrowing or blockage in an unspecified bypass graft in the right leg, with an associated ulcer on another part of the lower leg. Use it when the documentation links the graft disease and the ulcer.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include impaired blood flow in the grafted limb and a nonhealing ulcer on the lower leg, with ischemic changes noted in the affected area.
When to use this code
Use I70.338 when the provider documents atherosclerosis involving a bypass graft in the right leg and specifies ulceration of another part of the lower leg. The record should support both the graft location and the ulcer site.
Choose this code when the bypass graft type is not specified. If the ulcer location is different from other coded lower-leg sites, confirm the wording carefully and code to the documented anatomy.
Do not use for
Do not use this code for ulcers without documented atherosclerosis of a bypass graft, or when the affected leg is not the right leg. Check documentation if the graft type or ulcer location is unclear.
Coding tip
Verify that the chart links the ulcer to the right-leg bypass graft disease before assigning I70.338.