Coronary Artery Bypass Graft (CABG) surgery outcomes reports are based on data collected by HCAI’s California CABG Outcomes Reporting Program. The reports and visualizations provide quality ratings for the state-licensed hospitals and surgeons that perform coronary artery bypass graft (CABG) surgery. The performance ratings are based on three key risk-adjusted outcomes: operative mortality for isolated CABG, operative mortality for CABG + Valve, and post-operative stroke.