ICD-10 Code I70.249 – Atherosclerosis of native arteries of left leg with ulceration of unspecified site (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I70.249 – Atherosclerosis of native arteries of left leg with ulceration of unspecified site
What it is
This code identifies atherosclerosis in the native arteries of the left leg when an ulcer is present, but the ulcer site is not specified. Use it for peripheral arterial disease affecting the left lower extremity.
Clinical signs
Typical findings include poor limb perfusion, diminished pulses, leg pain with walking, and a nonhealing ulcer on the left leg. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record states atherosclerosis of native arteries in the left leg and documents an ulcer, but does not identify the ulcer location. You should also confirm that the vessel is native, not a bypass graft or other graft. If the ulcer site is documented elsewhere, code to that more specific option instead.
Do not use for
Do not use this code if the ulcer is on the right leg, if no ulcer is documented, or if the disease involves graft vessels rather than native arteries. Check documentation.
Coding tip
Verify laterality, native vessel status, and ulcer site before assigning I70.249.