Ind. Code § 4-21.5-3.5-23

Sec. 23. A mediator is required to use an effective system to identify potential conflict of interest at the time of appointment to a proceeding as a mediator. The mediator may not subsequently act as an investigator or make any recommendations regarding the mediated proceeding. A person may not serve as an administrative law judge in a subsequent hearing of a matter in which the person served as a mediator.