ICD-10 Code I70.33 – Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.33 – Atherosclerosis of unspecified type of bypass graft(s) of the right leg with ulceration
What it is
This code identifies atherosclerotic narrowing or blockage in a bypass graft supplying the right leg, with an associated ulcer. It applies when the graft type is not specified in the record.
Clinical signs
Clinical findings may include reduced limb perfusion, diminished pulses, ischemic skin changes, and a nonhealing ulcer on the right leg. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents atherosclerosis in an unspecified bypass graft of the right leg and also documents ulceration. The ulcer must be linked to the affected graft or ischemic limb condition. Check documentation if the graft type, laterality, or ulcer relationship is unclear.
Do not use for
Do not use this code for native artery atherosclerosis without a bypass graft, or when the ulcer is unrelated to the vascular disease. Do not assign it if the graft type or right-sided location is not supported.
Coding tip
Confirm both the bypass graft site and the ulcer association before coding, and verify that the right leg is explicitly documented.