(1) If an insurer utilizes the services of an administrator, the insurer shall be responsible for determining the benefits, premium rates, underwriting criteria and claims payment procedures applicable to such coverage and for securing reinsurance, if any. The rules pertaining to these matters must be provided, in writing, by the insurer to the administrator. The responsibilities of the administrator as to any of these matters shall be set forth in the written agreement between the administrator and the insurer.
(2) It is the sole responsibility of the insurer or employer to provide for competent administration of its programs.
(3) In cases where an administrator benefits for more than one hundred (100) certificate holders on behalf of an insurer, the insurer shall, at least semiannually, conduct a review of the operations of the administrator. At least one (1) such review shall be an on-site audit of the operations of the administrator.