Maryland Code, Insurance § 15-1A-06

(a) A carrier may not establish rules for eligibility, including continued eligibility, for enrollment of an individual into a health benefit plan based on health status-related factors, including:

(b) A carrier may not require an individual, as a condition of enrollment or continued enrollment in a health benefit plan, to pay a premium or contribution that is greater than the premium or contribution for a similarly situated individual enrolled in the health benefit plan on the basis of any health status-related factor in relation to the individual or to an individual enrolled under the health benefit plan as a dependent of the individual.