Mental Health Parity and Addiction Equity Act (MHPAEA) Disclosure The Mental Health Parity and Addiction Equity Act of 2008 generally requires group health plans and health insurance issuers to ensure that financial requirements (such as co - pays and deductibles) and treatment limitations (such as annual visit limits) app licable to mental health or substance use disorder benefits are no more restrictive than the predominant requirements or limitations applied to substantially all medical/surgical benefits. For information regarding the criteria for medical necessity determ inations made under the p lan with respect to mental health or substance use disorder benefits, please contact your plan administrator at 617 - 715 - 3600 .