Mass. Gen. Laws ch. 118E § 18
The division may purchase on behalf of any person eligible for medical assistance under this chapter medical insurance furnished in accordance with the provisions of chapter one hundred and seventy-five, one hundred and seventy-six A, one hundred and seventy-six B or one hundred and seventy-six G, provided that such medical insurance, in conjunction with any supplemental coverage that may be available to such person by the division under this chapter, would enable such person to obtain medical care and services comparable to those afforded any other similar eligible person under this chapter, at no greater cost to such person or the division. The third party liability unit of the division is hereby authorized to establish services and procedures which seek to maximize and coordinate the utilization of health care benefits provided under any such purchase of medical insurance for such person.
Mass. Gen. Laws ch. 118E, § 18