Moderator of the curia is a top administrative position held by a Catholic priest in a diocese under the supervision of the bishop. The moderator coordinates the exercise of the administrative duties and oversees the office holders, or curia, in the diocese. Moderator of the curia has been compared to that of a chief operating officer (COO) in a corporation. Although the office was first included in the 1983 Code of Canon Law, the concept is much older.