State insurance rules follow the state administrative process

(a) The rules, notices, hearings, orders, and appeals provided for in this code are in all applicable respects subject to chapter 91, unless it is expressly provided otherwise. (b) The commissioner shall hold a hearing if required by this code. The commissioner may hold other hearings as the commissioner deems necessary for such purposes as are within the scope of this code. (c) The hearings shall be held at a place designated by the commissioner and, at the commissioner's discretion, may be open to the public. (d) Application for a hearing made to the commissioner pursuant to this code shall be in writing and shall specify in what respects the person so applying was aggrieved and the grounds to be relied upon as a basis for the relief to be demanded at the hearing. Where the commissioner has used the authority contained in section 431:9-235 or section 431:9A-112 to suspend, revoke, or refuse to extend a license subject to the right of the licensee to have a hearing and has suspended the license pending the hearing, the commissioner shall hold the hearing within thirty days after the commissioner's receipt of the application unless postponed by mutual consent. (e) Any appeal made from a decision by the commissioner shall be made pursuant to chapter 91.