ICD-10 Code I70.344 – Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of heel and midfoot (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.344 – Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of heel and midfoot
What it is
This code identifies atherosclerotic narrowing in an unspecified bypass graft in the left leg, with an associated ulcer on the heel and midfoot. Use it when the record links the graft disease to that ulcer location.
Clinical signs
Typical findings include reduced blood flow in the grafted leg and a nonhealing ulcer involving 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 unspecified bypass graft in the left lower extremity and specifically states ulceration of the heel and midfoot. The ulcer must be documented as part of the condition, not as a separate unrelated wound. Check documentation if the graft type, laterality, or ulcer site is unclear.
Do not use for
Do not use this code for native-vessel peripheral arterial disease without a bypass graft, or for ulcers in other locations. If the record does not specify left leg involvement or the heel/midfoot ulcer, code more precisely or check documentation.
Coding tip
Confirm both the bypass graft site and the exact ulcer location before assigning I70.344.