Glossary

A standard unit of measurement of utilization. Refers to an annualized use of the hospital or other institutional care. It is the number of hospital days that are used in a year for each thousand covered lives. The formula used to calculate days per thousand is as follows: (# of days/member months) x (1000 members) x (# of months). An indicator calculated by taking the total number of days (for inpatient, residential, or partial hospitalization) or visits (for outpatient) received by a specific group for a specific period of time (usually one year). A measure used to evaluate utilization management performance.