In June 2025, the U.S. Department of Health and Human Services Office of Inspector General (OIG) announced a new item in its Work Plan: “Medicare Payments for Clinical Diagnostic Laboratory Tests in 2024.” This annual review, mandated by the Protecting Access to Medicare Act of 2014 (PAMA), focuses on analyzing the top 25 laboratory tests by Medicare expenditures for the previous calendar year. For clinical laboratories and healthcare providers, this announcement signals the need to pay close attention to billing practices, compliance programs, and potential audit risks.