No certificate shall be furnished by any insurer in connection with, or pursuant to any provision of, any group sickness and accident insurance policy delivered, issued for delivery, or used in this state, and no policy of sickness and accident insurance shall be delivered, issued for delivery, or used in this state, nor shall any indorsement, rider, or application which becomes or which is designed to become a part of any such policy or certificate be delivered, issued for delivery, or used in this state, until a copy of the form of such policy, certificate, indorsement, rider, or application and of the premium rates and of the classification of risks pertaining thereto has been filed with the superintendent of insurance. No such policy, certificate, indorsement, rider or application shall be delivered, issued for delivery, or used until the expiration of thirty days after the form of such policy, certificate, indorsement, rider, or application has been filed with the superintendent, unless he has previously given to the insurer his written approval thereto. If the superintendent finds that any such form of policy, certificate, indorsement, rider, or application which has been filed with him by an insurer contains any provision which is contrary to the law of this state, or contains inconsistent provisions, or contains any question, provision, title, heading, backing, or other indication of its contents, which is ambiguous, misleading, or deceptive, or likely to mislead or deceive the policyholder, certificate holder or applicant, he shall give written notice of his finding to the insurer which has filed such form, and thereafter no insurer which has filed such form shall deliver, issue for delivery, or use such form in this state.

After the expiration of thirty days from the filing of any such form, or at any time after the superintendent has given written approval thereof, the superintendent may, after a hearing of which at least twenty days’ written notice has been given to the insurer issuing such form, withdraw approval on any ground stated in this section. Such disapproval shall be effected by written order of the superintendent which shall state the ground for disapproval and the date, not less than thirty days after such hearing, when the withdrawal of approval shall become effective. After the date when the withdrawal of approval of any such form becomes effective, such form shall not be delivered, issued for delivery, or used in this state. The form of any certificate furnished by any insurer to a resident of this state in connection with, or pursuant to any provisions of, any group sickness and accident insurance policy which policy is not delivered, issued for delivery, or used in this state but which insures residents of this state shall, upon request of the superintendent, be filed with the superintendent.