CFR > Title 45 - Public Welfare > SUBTITLE A—DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER A—GENERAL ADMINISTRATION (parts 1 to 100) > PART 81—PRACTICE AND PROCEDURE FOR HEARINGS UNDER PART 80 OF THIS TITLE > SUBPART F—Proceedings Prior to Hearing (§81.51 to §81.58) > 81.51—Notice of hearing or opportunity for hearing.