Litigation Provides Clues to Ongoing Challenges in Implementing Insurance Parity

Area of Science:

• Health Law
• Health Insurance Policy
• Mental Health Services

Background:

• Mental health and substance use disorder (MH/SUD) parity laws have been enacted across 37 states and federally over 25 years.
• These laws mandate non-discriminatory insurance coverage for MH/SUD services in private and some public insurance markets.
• Despite legislative efforts, numerous lawsuits allege violations of these parity laws.

Purpose of the Study:

• To examine critical issues underlying legal challenges to MH/SUD parity laws.
• To identify areas where parity enforcement is lacking.
• To clarify ongoing ambiguities in the interpretation of MH/SUD parity legislation.

Main Methods:

• Systematic identification of all private litigation concerning federal and state MH/SUD parity laws.
• Thematic analysis of a final sample of 37 lawsuits.
• Extraction of key legal issues and disputes.

Main Results:

• Litigation frequently centers on the scope of services covered by parity laws.
• Coverage disputes involve habilitative therapies (e.g., applied behavioral analysis for autism).
• Key issues include provider credentialing, medical necessity determinations, and non-quantitative treatment limitations.

Conclusions:

• Private litigation highlights significant gaps and ambiguities in MH/SUD parity law enforcement.
• Addressing issues raised in lawsuits is crucial for improving insurer compliance.
• Ongoing efforts must focus on these contentious areas to achieve equitable MH/SUD insurance coverage.