House Bill 502 aims to amend Tennessee Code Annotated by adding a new section to Title 71, Chapter 5, Part 1, specifically addressing coverage for Kleefstra syndrome under the TennCare program. The bill defines key terms, including "Bureau," "Enrollee," and "Kleefstra syndrome," which is described as a rare genetic disorder with various developmental and health-related challenges. The legislation mandates that the Bureau of TennCare provide coverage and benefits for the diagnosis and treatment of Kleefstra syndrome, ensuring that such coverage is on par with that provided for autism spectrum disorder, Down syndrome, and other related genetic disorders.

Additionally, the bill stipulates that the coverage must include early intervention services and support aimed at improving the quality of life and development of enrollees throughout their lives. This encompasses a range of therapeutic modalities, medications, and other necessary programs and equipment. The director of TennCare is also authorized to apply for a federal waiver to implement these provisions effectively. The act is set to take effect on July 1, 2025.