In 2009, the Mississippi State Department of Health began collecting discharge codes from all hospitals and storing the information in a centralized reporting system, the Hospital Discharge Data System. The inpatient discharge data set, which contains extensive information regarding patient demographics, expected payers, length of stay, hospital charges, admission and discharge status, medical diagnoses, and performed procedures, was used to identify trends and associations relevant to opioid-related hospitalizations. See the full report below.