label: American College of Cardiology/American Heart Association Lesion Complexity Score C
label_lc: american college of cardiology/american heart association lesion complexity score c
description: "Diffuse (length greater than 2cm) or excessive tortuosity of proximal segment or extremely angulated segments greater than 90 degrees or total occlusions greater than 3 months old and/or bridging collaterals or inability to protect major side branches or degenerated vein grafts with friable lesions. (ACC)"