Gall stone disease is the most common affliction of gallbladder and biliary tree, affecting 6.12% of the Indian population. However, despite the high prevalence, gallstones often (94%) remain asymptomatic, and are mostly discovered incidentally on abdominal imaging for unrelated diagnoses. The gold standard of care for gall bladder calculi is laparoscopic cholecystectomy (LC) whereas most commonly used minimally invasive technique for common bile duct stones removal is represented by endoscopic retrograde cholangiopancreatography (ERCP). As previously reported, ERCP has a periprocedural complication rate of 9.8% including bleeding and acute pancreatitis 1.7%, infection, hemorrhage, perforation and a procedure-related mortality rate of 1.9% which may efficacy of LC. Due to its intrinsic invasiveness, ERCP should be proposed for those patients with confirmed bile duct stones only. Though ERCP followed by LC is a commonly used procedure, the optimal timing of LC after ERCP is still contentious and there’s no unanimous opinion regarding the timing of these procedures. It is yet not fully been known whether or not the time interval between ERCP and laparoscopic cholecystectomy affect the rate of conversion to open surgery and risk of operative complications. Though there have been reports of longer operating times, increased bleeding, and higher rates of conversion to open surgery. The reasons for these increased risks have also not been fully elucidated, and these risks may be markers of the underlying severity of gallstone disease or because of secondary sequelae of ERCP. Some published literature points towards the inflammation and edema of the extra hepatic biliary tree caused by ERCP as the culprit which makes the dissection of calot’s triangle difficult. The aim of this study was to evaluate the intraoperative findings and postoperative outcomes with respect to time interval (within 1 week, 1 to 6 weeks and more than 6 weeks) between ERCP and lc in patients who are scheduled laparoscopic cholecystectomy after ERCP. The effects of ERCP on laparoscopic cholecystectomy will be studied based on the length of the operation, intraoperative blood loss, operative difficulties, intraoperative complications, conversion to open cholecystectomy, length of post operative hospital stay and post operative complications.