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  • Dataset id: us_cfr
  • Jurisdiction: US · FDA
  • Date field: amendment_date. The search’s top-level date_from and date_to filter on it.
  • Access: any API key.

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Filters

Send these under filters.us_cfr in a search request. A filter not listed here, or a value of the wrong type, is a 400. The top-level date_from and date_to set amendment_date_from and amendment_date_to below, so give a date in one place only.
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string
CFR title number. Covered: 9 (Animals and Animal Products), 10 (Energy), 21 (Food and Drugs), 37 (Patents, Trademarks, and Copyrights), 40 (Protection of Environment), 42 (Public Health), 45 (Public Welfare). Values: 9, 10, 21, 37, 40, 42, 45.
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string
Exact CFR part number, e.g. ‘211’ (21 CFR cGMP), ‘164’ (45 CFR HIPAA), ‘493’ (42 CFR CLIA). Pair with cfr_title.
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string
Exact section number, e.g. ‘211.100’ or ‘164.512’ (a paragraph designator such as ‘(b)(1)’ is dropped), or an appendix label, e.g. ‘Appendix B to Part 50’. Pair with cfr_title.
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string
Exact citation, e.g. ‘21 CFR 211.100’, ‘45 CFR 46.116’ or ‘Appendix B to 10 CFR Part 50’ (‘10 CFR Part 50, Appendix B’ also works). A paragraph designator is dropped (‘21 CFR 312.32(c)’ finds 21 CFR 312.32); a part citation (‘42 CFR Part 493’) matches the whole part.
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string
Words that must all appear in the section heading (any order), e.g. ‘personnel qualifications’.
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string
Words that must all appear in the part heading (any order), e.g. ‘Current Good Manufacturing Practice’ or ‘Protection of Human Subjects’.
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string
Phrase in the chapter heading, which names the issuing agency, e.g. ‘Food and Drug Administration’, ‘Centers for Medicare’, ‘Nuclear Regulatory Commission’.
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string
Subpart of a part, by letter (‘WWWWW’, ‘C’) or heading words (‘Subpart C’, ‘Design Controls’). Pair with cfr_title and part, e.g. 40 CFR Part 63 subpart WWWWW (hospital ethylene oxide sterilizers).
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string
‘section’ for a numbered section, ‘appendix’ for an appendix to a part or subpart. Values: section, appendix.
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string (date)
Inclusive lower bound on amendment_date (YYYY-MM-DD): the effective date of the section’s latest amendment when eCFR records one since 2017, else the Federal Register publication date of the latest rule in its source note. Example: ‘2024-01-01’.
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string (date)
Inclusive upper bound on amendment_date (YYYY-MM-DD); same date as amendment_date_from. Example: ‘2024-12-31’.

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Fields

Each result from this dataset has these in fields: amendment_date, cfr_title, cfr_title_name, chapter, full_citation, node_type, part, part_title, section, section_title, subchapter, subpart, url