Commerce and Insurance, Dept. of - As enacted, revises law relative to the treatment and coverage of treatment for stage 4 advanced metastatic cancer, blood cancer, metastatic blood cancer, and associated conditions; makes related changes. - Amends TCA Title 8; Title 56; Title 63; Title 68 and Title 71.

HB 858 requires Tennessee's insurance commissioner to study how easily patients and doctors can request exceptions to step therapy rules online. The study will assess whether insurers' processes are accessible without unnecessary barriers for those seeking coverage for cancer treatments. The commissioner must submit findings and recommendations by December 2025. This bill affects insurers and healthcare providers who handle step therapy requests but does not change current coverage requirements. It becomes effective January 1, 2026.