20 C.F.R. § 404.924 : Employees' Benefits — SOCIAL SECURITY ADMINISTRATION — FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950- ) — DETERMINATIONS, ADMINISTRATIVE REVIEW PROCESS, AND REOPENING OF DETERMINATIONS AND DECISIONS —EXPEDITED APPEALS PROCESS — When the expedited appeals process may be used

You may use the expedited appeals process if all of the following requirements are met:

(a) We have made an initial and a reconsidered determination; an administrative law judge has made a hearing decision; or Appeals Council review has been requested, but a final decision has not been issued.
(b) You are a party to the reconsidered determination or the hearing decision.
(c) You have submitted a written request for the expedited appeals process.
(d) You have claimed, and we agree, that the only factor preventing a favorable determination or decision is a provision in the law that you believe is unconstitutional.
(e) If you are not the only party, all parties to the determination or decision agree to request the expedited appeals process.

20 C.F.R. §404.924