SB 1646 Oklahoma Senate · 2026 Regular Session

Health insurance; requiring coverage of medically necessary treatment of mental health and substance use disorders; prohibiting certain limitations; establishing certain utilization review requirements. Effective date.

SB 1646 requires Oklahoma health insurance plans to cover medically necessary mental health and substance use disorder treatment without arbitrary limits, affecting all residents with such coverage. It mandates coverage for "core treatments" aligned with clinical standards (like those from psychiatric associations), prohibits limiting care to short-term/acute settings, and bans insurers from rescinding authorizations after services are provided. The bill also requires insurers to follow specific rules for reviewing treatment requests and ensures out-of-network care access when in-network options aren't available. This applies to all health benefit plans covering hospital or medical services in Oklahoma, aiming to align mental health coverage with physical health benefits. The bill is pending in committee as of February 2026.
Bill status died 1 of 4 stages cleared
Introduction
Feb 2026
Committee Review
Floor Vote
Governor
Introduced Feb 2, 2026 Last action Mar 4, 2026
Maddy AI version diff · 1 comparison

What changed between versions

SB1646 (3-25-26) (GOLLIHARE) FA2.PDF Floor (Senate) · 5 edits
MODERATE
The bill was amended to update its title and add comprehensive definitions for mental health and substance use disorder terms, ensuring clarity on what constitutes medically necessary care and utilization review standards. These changes strengthen the bill's framework for insurance coverage requirements by establishing clear criteria for treatment authorization and plan limitations.
Scope change
The bill's scope remains focused on mental health and substance use disorder coverage requirements for health benefit plans, but the definitions section was significantly expanded to clarify terminology and standards of care.
TECHNICAL

Updated the bill title from a generic description to specifically reference mental health and substance use disorders, benefits, coverage, utilization review, and policy rules.

DEFINITION

Added eight new definitions including 'core treatment', 'generally accepted standards of care', 'health benefit plan', 'medically necessary treatment', 'mental health and substance use disorder', 'nonprofit health care provider professional association', 'utilization review', and 'utilization review criteria'.

REQUIREMENT

Added requirements that health benefit plans must provide coverage for medically necessary mental health and substance use disorder treatment consistent with nationally recognized clinical specialty association guidelines.

Added prohibition on limiting chronic or pervasive mental health and substance use disorder coverage to short-term or acute treatment levels.

Added protection against health benefit plans rescinding or modifying authorization or payment after a provider renders services in good faith pursuant to authorization.

Floor votes

How they voted

No floor votes recorded yet.
Full legislative history

Actions timeline

Total actions
9
Key actions
1
Committee
2
Feb 26, 2026
Committee
Referred to Appropriations
upper
Feb 26, 2026
Upper · Passed
Reported Do Pass as amended Business and Insurance committee; CR filed
upper
Feb 2, 2026
Introduced
First Reading
upper
2 primary · 0 co-sponsors

Sponsors