Mass. Gen. Laws ch. 176B § 4J
Any subscription certificate under an individual or group medical service agreement, except certificates which provide supplemental coverage to medicare or other governmental programs, which is delivered, issued for delivery or renewed in the commonwealth while this section is effective shall provide as a benefit for all individual subscribers or members within the commonwealth and all group members having a principal place of employment within the commonwealth, to the same extent that benefits are provided for other pregnancy-related procedures and subject to the other terms and conditions of the subscription certificate, coverage for medically necessary expenses of diagnosis and treatment of infertility. Said infertility benefits shall meet all other terms and conditions of the subscription certificate. For purposes of this section, "infertility" shall mean the condition of an individual who is unable to conceive or produce conception during a period of 1 year if the female is age 35 or younger or during a period of 6 months if the female is over the age of 35. For purposes of meeting the criteria for infertility in this section, if a person conceives but is unable to carry that pregnancy to live birth, the period of time she attempted to conceive prior to achieving that pregnancy shall be included in the calculation of the 1 year or 6 month period, as applicable.
Mass. Gen. Laws ch. 176B, § 4J