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Title 1

Displaying title 1, up to date as of 8/07/2026. Title 1 was last amended 12/29/2022.
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

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Code Structure

§ 21.7 Titles and subtitles.

(a) The major divisions of the Code are titles, each of which brings together broadly related Government functions.

(b) Subtitles may be used to distinguish between materials emanating from an overall agency and the material issued by its various components. Subtitles may also be used to group chapters within a title.

§ 21.8 Chapters and subchapters.

(a) The normal divisions of a title are chapters, assigned to the various agencies within a title descriptive of the subject matter covered by the agencies' regulations.

(b) Subchapters may be used to group related parts within a chapter.

(c) Chapter and subchapter assignments are made by the Office of the Federal Register after agency consultation.

[37 FR 23611, Nov. 4, 1972, as amended at 54 FR 9682, Mar. 7, 1989]

§ 21.9 Parts, subparts, and undesignated center heads.

(a) The normal divisions of a chapter are parts, consisting of a unified body of regulations applying to a specific function of an issuing agency or devoted to specific subject matter under the control of that agency.

(b) Subparts or undesignated center heads may be used to group related sections within a part. Undesignated center heads may also be used to group sections within a subpart.

§ 21.10 Sections.

(a) The normal divisions of a part are sections. Sections are the basic units of the Code.

(b) When internal division is necessary, a section may be divided into paragraphs, and paragraphs may be further subdivided using the lettering indicated in § 21.11.