SB 636 proposes reforms to Texas Insurance Code Chapter 1355, which governs coverage of mental health conditions and substance use disorders (MH/SUD). The bill significantly broadens the scope of health insurance parity requirements by applying them to additional state-managed health benefit plans, including those for public school employees, higher education employees, and retirees covered under Chapters 1551, 1575, 1579, and 1601 of the Insurance Code.
Currently, certain state employee and retiree health plans are partially or wholly exempt from MH/SUD parity laws. SB 636 removes those exemptions and clarifies that these plans must now comply with parity rules requiring equal treatment of mental health and substance use disorders as compared to physical health conditions in both quantitative (e.g., visit limits, co-pays) and non-quantitative (e.g., prior authorization, medical necessity criteria) terms. The bill also clarifies enforcement mechanisms, assigning oversight to the Texas Department of Insurance commissioner for most plans, while allowing plan trustees and boards to handle enforcement for self-administered plans.
Additional changes include the repeal of outdated statutory language that previously limited parity enforcement and the update of Section 1551.205 to remove mental health coverage limitations inconsistent with parity standards. The bill’s reforms would take effect beginning with plan years on or after January 1, 2026, allowing time for affected agencies and insurers to comply. Through these updates, SB 636 aims to ensure that public employees and retirees receive fair, comprehensive access to mental health and substance use care on par with physical health treatment.
The originally filed version of SB 636 and the Committee Substitute share the same core objective: to expand parity requirements for mental health and substance use disorder (MH/SUD) coverage to apply more broadly across Texas state health benefit plans. However, the Committee Substitute introduces some structural and substantive refinements to clarify implementation and enforcement.
One key difference is that the substitute adds specificity to the enforcement structure under Section 1355.255 of the Insurance Code. While the filed version already distinguishes enforcement responsibilities between the Texas Department of Insurance (TDI) and plan administrators (trustees or systems) for certain government plans, the Committee Substitute more clearly delineates this in terms of enforcement by the "applicable trustee, board of trustees, or system" for plans described in Section 1355.252(d). This ensures clearer accountability for parity compliance within self-funded or administratively autonomous government plans such as those under the Employee Retirement System (ERS), Teacher Retirement System (TRS), or university systems.
Another notable change is the addition of a revision to Section 1551.205 in the substitute bill, which is not present in the original filed version. This amendment removes an outdated provision that had allowed coverage for serious mental illness to be less extensive than physical illness coverage. Its repeal reflects a shift toward full parity in the treatment of MH/SUD conditions and better aligns with modern standards for mental health care.
The Committee Substitute also includes minor technical cleanups, such as the repeal of Section 1355.003(b) in both versions, which had created certain carve-outs for plans under Chapters 1551 and 1601. Additionally, the substitute bill appears to reformat and renumber references for clarity, especially in Section 1355.002(b), ensuring consistency across the affected statutory chapters (1551, 1575, 1579, and 1601).
In summary, while the original and substitute versions of SB 636 pursue the same policy direction, the substitute introduces clearer enforcement mechanisms, removes legacy language that conflicted with parity principles, and tightens statutory references for more effective implementation beginning in plan years starting January 1, 2026.