28 C.F.R. § 811.8
(a) If a person, other than a person who has been certified as a sex offender by the Court, disagrees with CSOSA's determination that the person is subject to registration or with CSOSA's determination of the person's classification for purposes of registration or notification, the person may seek judicial review of the determination, subject to the limitations of section 5(a)(1) of the Act (D.C. Official Code § 22-4004(a)(1)), by: