(a) This rule shall apply to all:

1. (1) Contracts delivered or issued for delivery in this state by an insurer on or after the effective date of this rule; and
2. (2) Existing group contracts which are amended or renewed on or after the effective date of this rule, including group contracts issued in another state insofar as their coverage of residents of this state is concerned.

(b)

1. (1) This rule does not apply to or affect the right of fraternal benefit societies to determine eligibility requirements for membership.
2. (2) If a fraternal benefit society does, however, admit members of both sexes, this rule is applicable to the insurance benefits available to members thereof.