Oth athscl autol vein bypass of the extrm, bilateral legs

This code signifies the presence of atherosclerosis affecting an autologous vein bypass graft in both lower extremities. This condition involves the hardening and narrowing of these surgically implanted grafts due to plaque buildup, impairing blood flow to the legs. It represents a complication of prior bypass surgery using the patient's own vein.

Apply this code when documentation explicitly states atherosclerosis within autologous vein bypass grafts in both legs. This typically occurs in patients with a history of peripheral artery disease who have undergone bypass surgery using a saphenous vein or other autologous vein. Supporting documentation includes physician notes detailing the diagnosis, imaging reports (e.g., duplex ultrasound, angiography) confirming atherosclerosis in the grafts, and operative reports of the original bypass procedure.

• Ensure documentation specifies "autologous vein" and "bilateral legs" to accurately assign this code.
• Distinguish from atherosclerosis of native arteries (I70.2- series) or nonautologous grafts (I70.40-I70.48).
• Sequence this code after the primary reason for the encounter if the atherosclerosis is a secondary diagnosis or complication.