ICD-10 Code I70.544 – Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of heel and midfoot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.544 – Atherosclerosis of nonautologous biological bypass graft(s) of the left leg with ulceration of heel and midfoot
What it is
This code identifies atherosclerotic narrowing or blockage in a nonautologous biological bypass graft in the left leg, with a documented ulcer on the heel and midfoot. Use it when the graft disease and ulcer location are both clearly stated.
Clinical signs
Typical findings include reduced blood flow to the left lower extremity and an ulcer on the heel or midfoot. Clinical features vary; refer to documentation for graft type, laterality, and ulcer site.
When to use this code
Use this code when the provider documents atherosclerosis affecting a nonautologous biological bypass graft in the left leg and also documents ulceration of the heel and midfoot. The record should support both the vascular graft diagnosis and the ulcer location. Check documentation if the ulcer depth or cause is unclear.
Do not use for
Do not use this code for native artery atherosclerosis without a bypass graft, or for ulcers not linked to the documented left-leg graft disease. Check documentation if the graft type or laterality is missing.
Coding tip
Verify the graft is nonautologous biological and that the ulcer is specifically on the heel and midfoot before assigning I70.544.