A newly unsealed Florida whistleblower lawsuit alleges software used at more than 300 hospitals is leading them to overbill Medicare and Medicaid.

Epic Systems Corp.'s software does not comply with 2012 guidelines for counting the number of minutes a patient is under anesthesia, claims the Tampa federal lawsuit unsealed Nov. 2. Instead, the software bills for the number of predetermined 15-minute “base units” linked to a certain billing code and then adds the full amount of time the patient was under anesthesia, whistleblower Geraldine Petrowski alleges.