Ohio Rev. Code § 3935.10
The superintendent of insurance shall promulgate rules and statistical plans, reasonably adopted to each of the rating systems on file with him, which may be modified from time to time and which shall be used thereafter by each insurer in the recording and reporting of its loss and country-wide expense experience, in order that the experience of all insurers may be made available at least annually in such form and detail as is necessary to aid the superintendent in determining whether rating systems comply with the standards set forth in section 3935.03 of the Revised Code. Such rules and plans may also provide for the recording and reporting of expense experience items which are specially applicable to this state and which are not susceptible of determination by a prorating of country-wide expense experience. In promulgating such rules and plans, the superintendent shall give due consideration to the rating systems on file with him and, in order that such rules and plans may be as uniform as is practicable among the several states, to the rules and to the form of the plans used for such rating systems in other states. No insurer need record or report its loss experience on a classification basis that is inconsistent with the rating system filed by it. The superintendent may designate one or more rating bureaus 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 bureaus.
Reasonable rules and plans may be promulgated by the superintendent for the interchange of data necessary for the application of rating plans.
In order to further uniform administration of rate regulatory laws, the superintendent and every insurer and rating bureau may exchange information and experience data with insurance supervisory officials, insurers, and rating bureaus in other states and may consult with them with respect to rate making and the application of rating systems.
The superintendent may make reasonable rules and regulations necessary to effectuate sections 3935.01 to 3935.17, inclusive, of the Revised Code.
Sections 119.01 to 119.13, inclusive, of the Revised Code are applicable to the rule-making functions of the superintendent under sections 3935.01 to 3935.17, inclusive, of the Revised Code, including appeals from the order of the superintendent in adopting, amending, or rescinding rules.
R.C. §3935.10