Maryland Code, Insurance § 15-404

(a) This section applies to:

(b) Each policy, contract, or certificate subject to this section shall provide a benefit that allows the addition of a certificate holder's or subscriber's dependent children to the certificate holder's or subscriber's policy or contract at any time and without evidence of insurability if:

(c) This section applies regardless of whether a certificate holder's or subscriber's dependent children are eligible for any continuation or conversion privileges under the policy or contract of the certificate holder's or subscriber's spouse.

(d) Within 6 months after the death of the spouse, the certificate holder or subscriber must exercise the benefit provided under this section.