[Code of Federal Regulations] [Title 45, Volume 1] [Revised as of October 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 45CFR81.83] [Page 318] TITLE 45--PUBLIC WELFARE AND HUMAN SERVICES PART 81_PRACTICE AND PROCEDURE FOR HEARINGS UNDER PART 80 OF THIS TITLE--Table of Contents Subpart H_Hearing Procedures Sec. 81.83 Official notice. Where official notice is taken or is to be taken of a material fact not appearing in the evidence of record, any party, on timely request, shall be afforded an opportunity to show the contrary.