Mass. Gen. Laws ch. 176A § 8O
Any contract between a subscriber and the corporation under an individual or group hospital service plan that shall be delivered, issued or renewed in the commonwealth shall provide, as benefits to all individual subscribers or members within the commonwealth and to all group members having a principal place of employment within the commonwealth, coverage for a bone marrow transplant or transplants for persons who have been diagnosed with breast cancer that has progressed to metastatic disease; provided, however, that said person shall meet the criteria established by the department of public health. The department of public health shall promulgate rules and regulations establishing criteria for eligibility for coverage hereunder which shall be consistent with medical research protocols reviewed and approved by the National Cancer Institute.
Mass. Gen. Laws ch. 176A, § 8O