CFR › Title 29 › Part 2560 › §2560.521-429 CFR §2560.521-4Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkSee 29 CFR 2571.1 through 2571.13 for procedural rules relating to administrative hearings under section 521 of ERISA.