Mass. Gen. Laws ch. 118E, § 10L: Filling of remaining portion of prescription for covered drug that is a narcotic substance earlier filled in lesser quantity

Section 10L. The division and its contracted health insurers, health plans, health maintenance organizations, behavioral health management firms and third party administrators under contract to a Medicaid managed care organization or primary care clinician plan shall provide, for any covered drug that is a narcotic substance contained in schedule II pursuant to chapter 94C and subject to cost sharing, that if a person receives a prescription filled in a lesser quantity pursuant to section 18 of said chapter 94C, said person shall not be subject to an additional payment obligation, including, but not limited, to co-payments, if said person fills the remaining portion of the prescription.