You are eligible to enroll, but not required to enroll
Regular graduate students, non-resident graduate students, and special graduate students who are registered for fewer than twenty-seven (27) units per academic term, or fewer than eighteen (18) units in the summer term, will not be automatically enrolled in the MIT Student Health Insurance Plan and not required to demonstrate comparable coverage from another source. They will, however, be eligible for voluntary enrollment in the MIT Student Health Insurance Plan.