Patients are required to arrive at the hospital in a fasted state for the procedure. Unlike other endoscopic methods, ERCP typically necessitates an overnight hospital stay for post-procedure monitoring until the patient can resume a normal diet. Patients must strictly follow any specific instructions provided by their gastroenterologist. It is essential to inform the physician about all current medications and any known allergies. Before ERCP, anesthesia is administered. An endoscope is carefully inserted through the mouth, guided down the esophagus, through the stomach, and into the duodenum. From the duodenum, the papilla, which is the common opening for the bile and pancreatic ducts, is located. A contrast fluid is then injected into these ducts to obtain detailed images, enabling the assessment of normal or abnormal features. If therapeutic intervention is necessary, specialized micro-instruments are passed through the endoscope to perform procedures such as stone removal, dilation of strictures, stent placement, or tissue biopsy for suspicious lesions. Both diagnostic and therapeutic aspects of the procedure generally take between 30 and 60 minutes.