This Act requires that individual, group, State employee, and public assistance insurance plans provide coverage for biomarker testing, when the test is supported by medical and scientific evidence. The Act applies to all such policies, contracts, or certificates issued, renewed, modified, altered, amended, or reissued after December 31, 2027. This Act is a substitute for and differs from Senate Bill No. 120 in that this Act clarifies that it does not prevent a provision restricting coverage to services by a licensed, certified, or carrier-approved provider or facility, restrict the use of utilization management, or require coverage of biomarker testing for screening purposes or coverage of investigatory and experimental biomarker tests. In addition, the Act differs from Senate Bill No. 120 in that it applies to policies, contracts, or certificates issued, renewed, modified, altered, amended, or reissued after December 31, 2027, rather than December 31, 2026.