ICD-10 Code I70.434 – Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of heel and midfoot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.434 – Atherosclerosis of autologous vein bypass graft(s) of the right leg with ulceration of heel and midfoot
What it is
This code identifies atherosclerotic narrowing in an autologous vein bypass graft in the right leg, with an associated ulcer on the heel and midfoot. Use it when the graft disease and ulcer location are both documented.
Clinical signs
Findings may include reduced limb perfusion, graft stenosis or occlusion, and a chronic ulcer on the heel or midfoot. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents atherosclerosis affecting an autologous vein bypass graft in the right leg and specifies ulceration of the heel and midfoot. The ulcer site must be clear in the record, and you should code the documented laterality exactly. If the graft type, limb, or ulcer location is not stated, check documentation.
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 graft disease. Do not assume the right leg or heel/midfoot location if the note does not specify it.
Coding tip
Verify graft type, laterality, and ulcer location in the operative note, vascular note, or wound documentation before assigning I70.434.