Reinforcements on the Horizon: New rules to strengthen enforcement of the Mental Health Parity and Addiction Equity Act

Reinforcements on the Horizon: Strengthening Mental Health Parity Enforcement The Mental Health Parity and Addiction Equity Act (MHPAEA) was enacted to ensure that mental health and substance use disorder (MH/SUD) benefits are not subject to more restrictive limitations than medical or surgical benefits. Yet, more than 15 years later, disparities in access persist—and in some cases, have grown. Recent audits revealed that every plan reviewed in 2022 failed to demonstrate compliance with MHPAEA. Despite extensive education efforts, plans continue to impose barriers such as inadequate networks and restrictive nonquantitative treatment limitations (NQTLs). In response, the Biden administration finalized new rules on September 9, 2024, marking a significant shift from education to enforcement. Key Changes Under the Final Rules Stricter NQTL Standards: Plans must ensure that processes and evidentiary standards for MH/SUD benefits are comparable to those for medical/surgical benefits—both in design and in operation. Data-Driven Compliance: Plans must collect and evaluate outcome data to assess whether NQTLs create material differences in access and take corrective action. Network Adequacy Focus: New requirements target disparities in provider networks, including admission standards and reimbursement rates. Meaningful Benefits Requirement: If a plan offers MH/SUD benefits in one classification, it must provide meaningful benefits across all six classifications where medical/surgical benefits are offered. Enhanced Comparative Analyses: Detailed content and disclosure requirements for NQTL analyses give regulators stronger enforcement tools. Why It Matters These rules aim to close longstanding gaps in behavioral health coverage and improve access to care. While industry groups warn of increased costs and potential litigation, regulators emphasize that parity is essential to addressing the nation’s mental health and substance use crisis. For providers and patients, the new enforcement regime offers opportunities to challenge noncompliance and advocate for fair coverage. Plans that fail to meet these standards risk losing the ability to impose NQTLs altogether. Effective Date: Most provisions take effect January 1, 2026.