130 C.M.R. 630.434
(A) Conditions of Payment. Covered specialized medical equipment includes devices, controls, or appliances that enable a participant to increase their ability to perform daily living activities or to perceive, control, or communicate with the environment or to perceive or communicate with other people; medical equipment necessary to address physical conditions or participant functional limitations; and ancillary supplies and equipment necessary for the proper functioning of specialized items. This service may also include evaluation, customization, maintenance or repairs, temporary replacement, and training for the participant or caregiver in the use of the equipment. Specialized medical equipment must:
(B) Nonpayable Services.