CFR›Title 6›Chapter I›Part 9›Subpart C ContainsSection 9.23CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart C—Activities by Other than Own Employees Sections 9.23 § 9.23 Professional and technical services. Previous B Subpart B—Activities by Own Employees Next D Subpart D—Penalties and Enforcement