Title 42 presents regulations that apply to: medical personnel; medical care and examinations; health related grants; fellowships, internships, and training; quarantine, inspection, and licensing; occupational safety and health research; health assessments; vaccines; Medicare and medical assistance programs; and standards and certification of facilities and services. Additions and revisions to this section of the code are posted annually by October. Publication follows within six months.

The CFRs are authored by the Office of the Federal Register.