This bill, the Lung Cancer Screening Expansion Act of 2025, mandates that all health insurers, including federal programs, provide full coverage for annual lung cancer screenings. It requires coverage without cost-sharing for eligible adults aged 50 to 80 who are at increased risk for lung cancer , as determined by a healthcare professional. The screenings, utilizing low-dose computed tomography (LDCT) or similar technologies, must be covered without restrictive barriers such as prior authorization , step-therapy, or frequency limits more stringent than one annually. Documentation requirements are also limited to evidence-based clinical guidelines. Federal agencies, including HHS and VA, are tasked with issuing implementing regulations within 180 days to ensure compliance across all programs.