October 30, 2025 

Dear Senate Majority Leader Thune, Senate Minority Leader Schumer, Speaker of the House Johnson, and House Minority Leader Jeffries:

As organizations representing laboratories, physicians, hospitals and health systems, health care providers, laboratory professionals, and diagnostic manufacturers, we respectfully urge Congress to protect patient access to clinical laboratory services by enacting needed reforms to the Medicare Clinical Laboratory Fee Schedule (CLFS). The CLFS represents less than one percent of total Medicare spending, while clinical laboratory services inform 70 percent of clinical decision making. Timely access to innovative clinical laboratory tests is critical to the prevention, early detection, therapy selection, and effective management of chronic and life-threatening diseases.

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