---
id: "nlm_unique_id"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["publishing", "medical"]
langs: ["common"]
quality: 80
url: "http://registry.apicrafter.io/datatype/nlm_unique_id"
---

# NLM Unique ID (`nlm_unique_id`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Number of a record (journal, book, audiovisual item) in the catalogue of the US National Library of Medicine. PubMed journal records carry it.

- Personal data (PII): no
- Categories: Publishing and print (publishing), Medical/pharma identifiers (medical)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^\d{6,19}(A|R|\d)$
```

## Examples

- `7501160` — The Journal of the American Medical Association
- `0050556` — Radiochimica Acta

## Mappings

- bioregistry: `nlm`
- wikidata: `P1055`

## Sources

- doc: <https://www.ncbi.nlm.nih.gov/nlmcatalog/>
- wikidata: <https://www.wikidata.org/wiki/Property:P1055>

## Quality

Score 80/100. Missing: negative example, translation, detector coverage.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/nlm_unique_id.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/publishing/nlm_unique_id.yaml>