Athscl autol vein bypass of the right leg w ulcer of ankle

This code signifies the presence of atherosclerosis specifically affecting an autologous vein bypass graft located in the right leg. A critical component of this diagnosis is the development of an ulceration on the ankle, indicating a severe complication of the graft's atherosclerotic process. This condition represents a failure or deterioration of a previously placed bypass to restore blood flow.

Use this code when documentation clearly states atherosclerosis of an autologous vein bypass graft in the right lower extremity, accompanied by an ankle ulcer. This typically occurs in patients with a history of peripheral artery disease who have undergone bypass surgery using their own vein, and are now experiencing graft failure with skin breakdown. Supporting documentation would include operative reports detailing the bypass, vascular studies confirming graft atherosclerosis, and wound care notes describing the ankle ulcer.

• Ensure the documentation specifies "autologous vein" graft; other graft types (e.g., synthetic) would require a different code.
• Verify the laterality is explicitly "right leg" and that an "ulceration of ankle" is present.
• Sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis if it's a co-morbidity impacting treatment.