215 ILCS 5/465
The Director shall, at least once in five years, make or cause to be made an examination of each rating organization licensed in this state as provided in Section 459 and he may, as often as he may deem it expedient, make or cause to be made an examination of each advisory organization referred to in Section 463 and of each group, association or other organization referred to in Section 464. The reasonable costs of any such examination shall be paid by the rating organization, advisory organization, or group, association or other organization examined upon presentation to it of a detailed account of such costs. The officers, manager, agents and employees of such rating organization, advisory organization or group, association or other organization may be examined at any time under oath and shall exhibit all books, records, accounts, documents, or agreements governing its method of operation. In lieu of any such examination the Director may accept the report of an examination made by the insurance supervisory official of another state, pursuant to the laws of such state. The provisions of Sections 132 through 132.7, 402, and 403 shall be applicable to the examinations hereunder.
215 ILCS 5/465