1. Labs with questionably high billing for additional tests alongside COVID-19 tests warrant further scrutiny Author(s): Maxwell, Ann, (Deputy Inspector General for Evaluation and Inspections), author Publication: Washington, D.C. : U.S. Department of Health and Human Services, Office of Inspector General, December 2022 Subject(s): Clinical Laboratory Techniques -- economicsCosts and Cost AnalysisCOVID-19 Testing -- economicsInsurance, Health, ReimbursementMedicare Part BUnited States