20 CFR § 416.1580 - Appeals Council's review of hearing officer's decision.
(a) Upon request, the Appeals Council will give the parties a reasonable time to file briefs or other written statements as to fact and law, and to request to appear before the Appeals Council to present oral argument. When oral argument is requested within the time designated by the Appeals Council, the Appeals Council will grant the request for oral argument and determine whether the parties will appear at the oral argument in person, by video teleconferencing, or by telephone. If oral argument is not requested within the time designated by the Appeals Council, the Appeals Council may deny the request.
(b) If a party files a brief or other written statement with the Appeals Council, he or she shall send a copy to the opposing party and certify that the copy has been sent.