CFR›Title 29›Subtitle B›Chapter XL›Part 4219›Subpart A ContainsSections 4219.1–4219.3CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart A—General Sections 4219.1 § 4219.1 Purpose and scope. 4219.2 § 4219.2 Definitions. 4219.3 § 4219.3 Disregarding certain contributions. Next B Subpart B—Redetermination of Withdrawal Liability Upon Mass Withdrawal