Athscl native arteries of right leg w ulceration of ankle

This code signifies the hardening and narrowing of the arteries in the right leg, specifically the native vessels, which has progressed to cause an open sore or lesion on the ankle. This condition is a manifestation of peripheral artery disease (PAD) with a localized tissue breakdown due to insufficient blood supply.

Apply this code when documentation clearly indicates atherosclerosis affecting the native arteries of the patient's right lower extremity, accompanied by an ulcer specifically located on the ankle. Supporting documentation should include diagnostic findings confirming arterial disease and a physical exam noting the ankle ulcer.

• Ensure laterality (right leg) and the presence of an ankle ulcer are explicitly documented.
• Do not use this code for ulcers on other parts of the leg or foot; specific codes exist for those locations.
• Sequence this code as a primary diagnosis when the ulcer is the reason for the encounter, or as a secondary diagnosis when managing the underlying atherosclerosis with a focus on the ulcer.