Improving Medicaid Precision and Cancer Test Act of 2025

This bill requires Medicaid programs to cover lung cancer biomarker testing for eligible enrollees, beginning January 1, 2027. It directly affects Medicaid recipients diagnosed with lung cancer who need these specific tests to guide treatment decisions. The key provision adds "lung cancer biomarker testing" as a mandatory benefit under Medicaid, amending the Social Security Act to require coverage for this diagnostic service. The change applies to all state Medicaid programs participating in the federal program, ensuring standardized access to this testing method. Coverage starts in 2027, with no additional state cost-sharing required for this specific test.