The bill amends Chapter 27-18.8 of the General Laws, known as the "Health Care Accessibility and Quality Assurance Act," by introducing a new section that mandates each healthcare entity or network plan to compile and report to the office of the health insurance commissioner a summary of how they require their contracted providers to submit claims for in-network outpatient behavioral health services. This reporting must occur before January 1, 2026, and at least annually thereafter. The summary should detail the use of specific current procedural terminology (CPT) codes and modifiers related to behavioral health services.

Additionally, the bill requires that every contract with a provider for in-network outpatient behavioral health services, including substance use disorder services, or for outpatient diagnostic or therapeutic services with a behavioral health modifier, must include a provision that, as of January 1, 2026, rates paid under such contracts for those services shall be subject to a one-time average increase of no less than the percentage increase determined by the health insurance commissioner based on the United States Department of Labor's Consumer Price Index (CPI) for All Urban Consumers (CPI-Urban) as of October 1, 2025, plus an additional five percent (5%). The act will take effect upon passage.