Mass. Gen. Laws ch. 118E § 10H
Subject to the availability of federal financial participation, the division shall cover medically necessary treatments for persons younger than 21 years old who are receiving medical coverage under this chapter and who are diagnosed with an autism spectrum disorder by a licensed physician or a licensed psychologist. If federal funds are available to the commonwealth, said coverage shall include, but shall not be limited to, services for applied behavior analysis supervised by a board certified behavior analyst and dedicated and non-dedicated augmentative and alternative communication devices, including, but not limited to medically necessary tablets; provided, however, that the division shall also provide coverage for augmentative and alternative communication devices not eligible for federal funds if the total cost incurred by the division for a device that is not eligible for federal funds is not more than the commonwealth's share of a comparable device that is eligible for federal funds.
Mass. Gen. Laws ch. 118E, § 10H