---
id: "icd9"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["medical"]
langs: ["common"]
quality: 100
url: "http://registry.apicrafter.io/datatype/icd9"
---

# ICD-9 code (`icd9`)

> **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.

Code of the Ninth Revision of the International Classification of Diseases (ICD-9) of the World Health Organization, which ICD-10 later replaced. A code is three digits for a category of diseases, with up to two decimal digits for a subcategory. Supplementary codes start with V (factors that influence health status and contact with health services) or E (external causes of injury and poisoning). ICD-9-CM, the clinical modification used in the United States until October 2015, adds a volume of procedure codes, which the regexp does not cover.

- Personal data (PII): no
- Categories: Medical/pharma identifiers (medical)
- Countries: global
- Languages: Common to most languages (common)
- Classification: categorical

## Detection

Regular expression (Python `re`):

```
^(?:\d{3}|V\d{2}|E[89]\d{2})(?:\.\d{1,2})?$
```

## Examples

- `250` — Diabetes mellitus
- `487.1` — Influenza with other respiratory manifestations
- `V01` — Contact with or exposure to communicable diseases
- `E849.0` — Place of occurrence: home
- `I61` (invalid example) — ICD-10 code
- `25` (invalid example) — Two digits

## Mappings

- autotype: `icd9`
- bioregistry: `icd9`
- wikidata: `P493`

## Supported by tools

- `autotype`
- `collibra`

## Translations

- ru: Код МКБ-9: Код Международной классификации болезней девятого пересмотра (МКБ-9): три цифры и до двух знаков после точки, дополнительные коды начинаются с V или E.

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/ICD-9>
- wikipedia: <https://en.wikipedia.org/wiki/List_of_ICD-9_codes>
- wikidata: <https://www.wikidata.org/wiki/Property:P493>
- other: <https://github.com/congy/AutoType/blob/master/data_release/icd9.txt>

## Quality

Score 100/100.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/icd9.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/medical/icd9.yaml>