Mass. Gen. Laws ch. 175 § 113C
The commissioner shall forthwith notify the registrar of motor vehicles of the names of all companies as they become or cease to be authorized to issue motor vehicle liability policies or to act as surety upon motor vehicle liability bonds, both as defined in section thirty-four A of chapter ninety.
Except for coverages which insurers may refuse to offer under the provisions of paragraph (A) of section one hundred and thirteen H, no company shall issue such motor vehicle liability policies or act as surety upon such motor vehicle liability bonds unless it makes a mandatory offer to issue to any person purchasing such policy or bond, at his option, additional coverage, beyond that required by section thirty-four A of chapter ninety, of at least fifteen thousand dollars on account of injury to or death of one person and at least forty thousand dollars on account of any one accident resulting in injury to or death of more than one person, and of the combination of bodily injury liability off the ways of the commonwealth and liability for guest occupants on and off the ways of the commonwealth, of medical coverage, so-called, to a limit of at least five thousand dollars, or fire and theft coverage and comprehensive coverage as limited by section one hundred and thirteen O, and of uninsured motor vehicle coverage, additional coverage beyond that required by section one hundred and thirteen L of at least fifteen thousand dollars on account of injury to or death of one person and forty thousand dollars on account of any one accident resulting in injury to or death of more than one person, provided that such additional amount of uninsured motor vehicle coverage chosen shall not exceed the amount of additional bodily injury coverage chosen under this section.
Mass. Gen. Laws ch. 175, § 113C