ICD-10 Code I70.241 – Atherosclerosis of native arteries of left leg with ulceration of thigh (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.241 – Atherosclerosis of native arteries of left leg with ulceration of thigh
What it is
This code identifies atherosclerotic narrowing or blockage in the native arteries of the left leg, with an ulcer located on the thigh. Use it when the record links the ulcer to arterial disease in that limb.
Clinical signs
Typical findings include diminished pulses, leg pain with walking, cool skin, or delayed wound healing. Clinical features vary; refer to documentation for the arterial source and ulcer location.
When to use this code
Use I70.241 when documentation states atherosclerosis of native arteries in the left leg and specifies an ulcer of the thigh. The note should show the ulcer is part of the arterial disease picture, not a separate pressure or diabetic wound. If the side, vessel type, or ulcer site is unclear, check documentation before coding.
Do not use for
Do not use this code for ulcers from venous disease, pressure injury, trauma, or diabetes without documented arterial atherosclerosis. Do not assign it if the ulcer is on a different site or the left-leg arterial involvement is not stated.
Coding tip
Match all three elements exactly: native arteries, left leg, and ulceration of thigh.