On March 16, 2026, Gov. Reeves signed HB 565, which requires group health plans to provide coverage for biomarker testing for a wide variety of purposes, including diagnosis, treatment, appropriate management, or ongoing monitoring of an enrollee’s disease or condition. Coverage is required when biomarker testing is supported by medical and scientific evidence. In addition, the law requires insurers to provide specific written justifications if coverage for biomarker testing is denied and furth