§ 108n

An insurer or producer authorized to issue policies against disability from injury or disease in the commonwealth shall not make a distinction or otherwise discriminate between persons, reject an applicant, cancel a policy or demand or require a higher rate of premium for a group or individual disability contract issued or delivered in the commonwealth to 1 or more residents of the commonwealth for reasons based solely upon an applicant's or insured's race, color, religious creed, national origin, sex, pregnancy, gender identity, sexual orientation or marital status.\nA violation of this section shall constitute an unfair method of competition or an unfair or deceptive act or practice in violation of chapter 176D.