Maryland Code, Insurance § 15-818

(1) each individual or group hospital or major medical insurance policy or certificate that is delivered or issued for delivery in the State by an insurer and is written on an expense-incurred basis;

(2) each individual or group medical or major medical contract, policy, or certificate that is delivered or issued for delivery in the State by a nonprofit health service plan; and

(3) each contract that provides hospital, medical, or surgical benefits to individuals or groups and is issued or delivered in the State by a health maintenance organization.