20 CFR 404.905 : Employees' Benefits (§ 1.1 To Parts 1011-1099) — (Part 400 To Part 499) — Social Security Administration (Part 400 To Part 499) — Federal Old-Age, Survivors And Disability Insurance (1950- ) (§ 404.1 To § 404.2127) — Determinations, Administrative Review Process, And Reopening Of Determinations And Decisions (§ 404.900 To § 404.999D) — Introduction, Definitions, And Initial Determinations (§ 404.900 To § 404.906) — Effect of an initial determination.