Type-2 Diabetes mellitus is not a component of the Obesity Surgery-Moality Risk Score (OS-MRS). Obesity Surgery-Moality Risk Score (OS-MRS):clinically useful score to predict moality risk in patients undergoing gastric bypass Risk factor Score Age >45 yr 1 BMI >50 kg/m2 1 Male gender 1 Hypeension 1 DVT/PE 1 Risk Category Score Post-op moality A (Low) 0-1 0.3 B (Moderate) 2-3 1.7 C (High) 4-5 3.2