Amends TCA Title 4; Title 8; Title 10; Title 53; Title 56; Title 63; Title 68 and Title 71.

Tennessee HB0870 amends various sections of the Tennessee Code Annotated related to health insurance and cost-sharing requirements. The bill affects insurers, pharmacy benefits managers, and third-party administrators by requiring them to include certain cost-sharing amounts in calculating an enrollee's contributions to health plans, particularly regarding high deductible health plans. Key provisions include stipulations on how cost-sharing amounts are applied and the prohibition of changing health plan coverage terms based on financial assistance availability for prescription drugs.