ICD-10 Code I70.341 – Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of thigh (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.341 – Atherosclerosis of unspecified type of bypass graft(s) of the left leg with ulceration of thigh
What it is
This code identifies atherosclerotic disease in an unspecified bypass graft in the left leg, with an ulcer on the thigh. Use it when the record links graft narrowing or blockage to a left thigh ulcer.
Clinical signs
Typical findings include chronic limb ischemia, reduced circulation in the grafted leg, and a documented ulcer on the left thigh. 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 leg and specifies ulceration of the thigh. The ulcer must be associated with the vascular disease in the record. Check documentation if laterality, graft type, or ulcer site is unclear.
Do not use for
Do not use it for bypass graft disease without atherosclerosis, or for ulcers not documented as linked to the graft-related arterial disease. Do not assign it if the ulcer site is different or unspecified.
Coding tip
Confirm the exact graft location, laterality, and ulcer site before coding; if the documentation is incomplete, check documentation.