Amends TCA Title 56 and Title 71.

Tennessee HB0484 mandates that health insurers and TennCare health benefit plans provide coverage for biomarker testing effective January 1, 2026, for diagnosis, treatment, management, or monitoring of diseases when supported by medical evidence. The bill affects health insurers, TennCare enrollees, and healthcare providers, ensuring timely prior authorization processes and access to exception requests for coverage policies. Key provisions include specific criteria for biomarker testing coverage, requirements for timely notification of prior authorization decisions, and the establishment of accessible processes for requesting exceptions to coverage policies.