A hospital service corporation of this State may enter into agreements to participate with other corporations in the issuance of group contracts to policyholders whose employees or members are located in more than one state. Such agreements may provide for experience rating, for a sharing of the premiums, claims, and expenses by the participating corporations or for acceptance or ceding of the whole or portions of group risks on a reinsurance basis. Such agreements shall be filed with and approved by the commissioner before becoming effective.
N.J.S. § 17:48-6.4