CFR›Title 6›Chapter I›Part 9›Subpart C ContainsSection 9.23CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 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