ICD-10 Code I70.53 – Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.53 – Atherosclerosis of nonautologous biological bypass graft(s) of the right leg with ulceration
What it is
This code identifies atherosclerotic narrowing or blockage affecting a nonautologous biological bypass graft in the right leg, with an associated ulceration. Use it when the graft itself is the documented site of disease and the ulcer is part of the record.
Clinical signs
Findings may include impaired blood flow in the graft, limb pain, reduced perfusion, or a nonhealing ulcer in the right leg. Clinical features vary; refer to documentation.
When to use this code
Use I70.53 when the provider documents atherosclerosis of a nonautologous biological bypass graft in the right leg and also documents ulceration. The ulcer may be described as arterial or ischemic, but the graft-related atherosclerosis must be clear. Check documentation if the laterality or graft type is not explicit.
Do not use for
Do not use this code for native artery atherosclerosis without a bypass graft, or for ulcers without documented graft disease. If the record does not specify a biological graft or right leg, check documentation.
Coding tip
Verify the graft type, laterality, and ulceration in the provider note before assigning I70.53.