Md. Code Ann., Ins. § 17-303
(2) a statement made by an insured under the policy about insurability may not be used to contest the validity of the insurance as to which the statement was made unless:
Each policy of group life insurance shall contain a provision that:
Added by Acts 1996, c. 11, § 1, eff. Oct. 1, 1997.
Formerly Art. 48A, § 428.