Section 82. Notwithstanding any general or special law to the contrary, the office of Medicaid shall seek a waiver and promulgate regulations in order to require the division and its health insurers, health plans, health maintenance organizations, behavioral health management firms and third-party administrators under contract with the division, a Medicaid managed care organization or primary care clinician plan to meet the parity requirements described under the federal Paul Wellstone and Pete Domenici Mental Health Parity and Addiction Equity Act of 2008, as amended, and any federal guidance or regulations relevant to the act, including 42 C.F.R. § part 438 Subpart K, 42 C.F.R. § 440.395 and 42 C.F.R. § 457.496, for all enrollees. For persons under the age of 21, MassHealth and its agents may comply with this section by meeting the obligations related to Early and Periodic Screening, Diagnostic and Treatment benefits under 42 C.F.R. § 457.496(b) or 440.395(c).