Except for a policy issued under § 3503 of this title, a group health insurance policy may be extended to insure the employees or members with respect to their family members or dependents, or any class or classes thereof, subject to the following:
(1) The premium for the insurance shall be paid either from funds contributed by the employer, union, association or other person to whom the policy has been issued, or from funds contributed by the covered person, or from both. Except as provided in paragraph (2) of this section, a policy on which no part of the premium for the family members’ or dependents’ coverage is to be derived from funds contributed by the covered persons must insure all eligible employees or members with respect to their family members or dependents, or any class or classes thereof.
(2) An insurer may exclude or limit the coverage on any family member or dependent as to whom evidence of individual insurability is not satisfactory to the insurer.