Introduction: Scoring systems objectively guide towards providing quality of care as well as plays a significant role as far as outcomes of a particular procedure. In the present study a comparison is made between two well established scoring systems i.e, POSSUM & P- POSSUM and also importance is given to highlight synergistic usage of well established scoring systems to effectively gauge in anticipating the outcomes post laparotomy. Objectives of the Study: To compare the accuracy of mortality prediction between the two scoring systems. To highlight the importance of synergistic use of scoring system in predicting morbidity and mortality. Usage of Clavien-Dindo scoring system to attain comparative objectivity of a surgical procedure. Materials and Methods: It is the prospective observational study conducted for the period of 1 year. The data is collected from the inpatients after obtaining the written informed consent, undergoing laparotomy admitted under the Department of General Surgery, Ramaiah Hospitals, Bengaluru during the period of study. Results: Among the 96 cases studied 60(62.5%) were males and 36(37.5%) were females. Emergency resuscitation, operation done within less than 24 hours is 49%. Elective cases were 47.9% and emergency immediate operation done within less than 2 hours is 3.1%. Mean physiological score calculated using POSSUM and P-POSSUM is 21.92% and 22.98% and the difference is not statistically significant. Mean operative score calculated using POSSUM and PPOSSUM is 15.13% and 17.16% and the mean difference is significant statistically. Mean mortality calculated using POSSUM and P-POSSUM is 20.44 and 12.46% and the difference is statistically significant. Mortality prediction was noted to be better with P-POSSUM scoring system, while POSSUM over predicted mortality by 1.5 times even in low risk cases. Complication following a procedure were graded using universally accepted CLAVEIN DINDO grading system so that comparative objectivity is maintained. Conclusion: It was noted from the study that POSSUM scoring over predicted mortality in low-risk cases by 1.5 times, against other studies wherein the overestimation was noted to be between two to eight folds. P-POSSUM accurately predicted the operative severity and expectant management and was statistically significant parameter. It was noted from the study that morbidity estimation is as important as precise mortality estimation of a particular operative procedure. Hence we conclude highlighting the fact that synchronous usage of POSSUM and P-POSSUM is an essential guiding which will aid in expectant post procedural outcomes.