Indiana Medical Error Reporting System final report for 2017 summarizes 110 reportable events in hospitals and outpatient surgery centers in 2017. Five (5) of 110 events occurred at ambulatory surgery centers. Adverse Events such as leaving a foreign object inside a patient after surgery, operating on the wrong body part, (remarkably, these avoidable surgical errors still happen) or Stage 3 or 4 pressure ulcers (bedsores) acquired after admission, are based on NQF’s list of 28 serious, largely preventable adverse events. List of events by facility name is a separate 289-page pdf file called Data Tables. IU Health and St. Vincent in Indianapolis, Baptist Health Floyd (New Albany) and Methodist in Gary, IN had the greatest number of adverse reportable events in 2017. Market share data included. Published by IN State Dept. of Health (ISDH, in.gov) October 2018.