Ohio Rev. Code § 3937.12
Subject to sections 119.01 to 119.13, inclusive, of the Revised Code, the superintendent of insurance may promulgate reasonable rules for the reporting by each insurer of its loss experience, in order that such experience of all insurers may be made available, at least annually, to aid him in determining whether rating systems comply with the standards set forth in division (D) of section 3937.02 of the Revised Code. No insurer shall be required to record or report its loss experience in a manner that differs from that which is regularly employed and maintained in the usual course of such insurer's business. The superintendent may designate one or more rating organizations or other agencies to assist him in gathering such experience and making compilations thereof, and such compilations shall be made available, subject to reasonable rules promulgated by the superintendent, to insurers and rating organizations.
In accordance with sections 119.01 to 119.13, inclusive, of the Revised Code, reasonable rules and plans may be promulgated by the superintendent for the interchange of data necessary for the application of rating plans.
The superintendent and every insurer and rating organization may exchange information and experience data with insurance supervisory officials, insurers, and rating organizations in other states and may consult with them with respect to rate making and the application of rating systems.
R.C. §3937.12