Recent 5-Year Trend of Endoscopic Retrograde Cholangiography in Korea Using National Health Insurance Review and Assessment Service Open Data

Background/Aims: The utilization of endoscopic retrograde cholangiopancreatography (ERCP) is variable and largely dependent on a patient’s age, sex, and region. Herein we analyzed the publicly available Health Insurance Review and Assessment (HIRA) database with the aim of understanding the current status and trend of ERCP use in Korea. Methods: Between 2013 and 2017, information regarding ERCP was acquired from the HIRA database using the procedural codes of the Korean Standard Classification of Disease. We analyzed the annual number of patients according to age in 10- year increments, sex, type of medical institution, and administrative division. Results: The total number of patients and number of patients undergoing ERCP per 100,000 people increased from 40,516 and 78.6 in 2013 to 47,027 and 91.3 in 2017, respectively those aged 70 years accounted for the highest number, and the increase was the most prominent in those aged 80 years or older. Men underwent more ERCPs than women, except in younger patients (