20 C.F.R. § 404.620
(a) General rule. If you file an application for benefits before the first month you meet all the other requirements for entitlement, the application will remain in effect until we make a final determination on your application unless there is an administrative law judge hearing decision on your application. If there is an administrative law judge hearing decision, your application will remain in effect until the administrative law judge hearing decision is issued.
[44 FR 37209, June 26, 1979, as amended at 52 FR 4003, Feb. 9, 1987; 83 FR 21709, May 10, 2018]