No policy of group health insurance shall be delivered in this State unless it contains in substance the provisions set forth in §§ 3513-3527 of this title or provisions which in the opinion of the Commissioner are more favorable to persons insured, or at least a favorable to the persons insured and more favorable to the policyholder; provided, however,
(1) That §§ 3517, 3519, 3524, 3528 and 3529 of this title shall not apply to policies insuring persons under § 3503 of this title;
(2) That the standard provisions required for individual health insurance policies shall not apply to group health insurance policies; and
(3) That if any provision of this section is in whole or in part inapplicable to or inconsistent with the coverage provided by a particular form of policy, the insurer, with the approval of the Commissioner, shall omit from such policy any inapplicable provision or part of a provision and shall modify any inconsistent provision or part of the provision in such manner as to make the provision as contained in the policy consistent with the coverage provided by the policy.