CABG is recommended in patients undergoing non- coronary cardiac surgery with greater than or equal to 50% luminal diameter narrowing of the left main coronary artery or greater than or equal to 70% luminal diameter narrowing of other major coro- nary arteries. (Level of Evidence: C) Class IIa 1. The use of the LIMA is reasonable to bypass a signifi- cantly narrowed LAD artery in patients undergoing noncoronary cardiac surgery. (Level of Evidence: C) 2. CABG of moderately diseased coronary arteries (>50% luminal diameter narrowing) is reasonable in patients undergoing noncoronary cardiac sur- gery. (Level of Evidence: C) 3. CAD Revascularization Recommendations and text in this section are the result of extensive collaborative discussions between the PCI and CABG writing committees, as well as key members of the Stable Ischemic Heart Disease (SIHD) and UA/NSTEMI writing committees. Certain issues, such as older versus more contemporary studies, primary analyses versus subgroup analyses, and prospective versus post hoc analyses, have been carefully weighed in designating COR and LOE; they are addressed in the appropriate corresponding text. The goals of revascularization for patients with CAD are to 1) to improve survival and 2) to relieve symptoms. Revascularization recommendations in this section are predominantly based on studies of patients with symptomatic SIHD and should be interpreted in this context. As discussed later in this section, recommendations on the type of revas- cularization are, in general, applicable to patients with UA/ NSTEMI. In some cases (eg, unprotected left main CAD), specific recommendations are made for patients with UA/ NSTEMI or STEMI. Historically, most studies of revascularization have been based on and reported according to angiographic criteria. 