CFR › Title 20 › Part 418 › §418.362020 CFR §418.3620Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkAn initial determination is binding unless you request an appeal within the time period stated in § 418.3630(a) or we revise it as provided in § 418.3678.