> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rhizomeai.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FDA Regulations (21 CFR)

> Search filters and result fields of fda_cfr_title21.

* **Dataset id:** `fda_cfr_title21`
* **Jurisdiction:** US · FDA
* **Date field:** `date`. The search's top-level `date_from` and `date_to` filter on it.
* **Access:** any API key.

## Filters

Send these under `filters.fda_cfr_title21` in a [search](/api-reference/v3/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 `date_from` and `date_to` below, so give a date in one place only.

<ParamField body="section" type="string">
  Exact CFR section number to match. Example: '211.1' or '820.30'.
</ParamField>

<ParamField body="part" type="string">
  Exact CFR part number to match. Example: '211' for cGMP, '820' for QSR.
</ParamField>

<ParamField body="full_citation" type="string">
  Exact full citation to match (e.g., '21 CFR 211.1').
</ParamField>

<ParamField body="section_title" type="string">
  Keyword match on section title (BM25 tokenized). Example: 'personnel qualifications'.
</ParamField>

<ParamField body="part_title" type="string">
  Keyword match on part title (BM25 tokenized). Example: 'Current Good Manufacturing Practice'.
</ParamField>

<ParamField body="date_from" type="string (date)">
  Inclusive lower bound on amendment date (YYYY-MM-DD). Example: '2020-01-01'.
</ParamField>

<ParamField body="date_to" type="string (date)">
  Inclusive upper bound on amendment date (YYYY-MM-DD). Example: '2023-12-31'.
</ParamField>

## Fields

Each result from this dataset has these in `fields`:

`date`, `full_citation`, `part`, `part_title`, `section`, `section_title`, `url`


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