ICD-10 Code I70.24 – Atherosclerosis of native arteries of left leg with ulceration (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.24 – Atherosclerosis of native arteries of left leg with ulceration
What it is
This code identifies atherosclerosis in the native arteries of the left leg when an ulcer is present. Use it when documentation links the ulcer to arterial disease in that limb.
Clinical signs
Typical findings include peripheral arterial disease with poor blood flow, ischemic skin changes, and a nonhealing ulcer on the left leg or foot. Clinical features vary; refer to documentation.
When to use this code
Use I70.24 when the record states atherosclerosis of native arteries in the left leg and also documents ulceration. The ulcer site may be on the leg or foot, but it must be associated with the left lower extremity arterial disease. Check documentation if laterality or ulcer linkage is unclear.
Do not use for
Do not use this code for ulcers caused by venous disease, diabetes, pressure injury, or trauma without arterial atherosclerosis. Do not use it if the chart does not specify the left leg.
Coding tip
Confirm both laterality and the arterial cause of the ulcer before assigning I70.24.