What does HSMR1 PRN mean?

HSMR1 PRN typically refers to "Hospital Standardized Mortality Ratio" (HSMR) and "pro re nata" (PRN), which is a Latin term meaning "as needed." HSMR is a measure used to assess the quality of care in hospitals by comparing observed to expected mortality rates. The "PRN" component suggests that the measure or action related to HSMR may be applied or considered as necessary, rather than on a fixed schedule.