The International Classification of Diseases (ICD) is designed to promote international comparability in the collection, processing, classification, and presentation of mortality statistics.

Comment

Note that ICD9 codes representing mid-hierarchy relations, such as those in the form of XXX-YYY are not possible to resolve, but are useful and appear in many places that make xrefs to ICD9

Prefix

icd9

Alternative Prefixes

MTHICD9_2006 ICD9_2005 ICD9

License

CC BY-ND 3.0 IGO

Links

Homepage

Contact

Missing Contact

Pattern for Local Unique Identifiers

Local identifiers in International Classification of Diseases, 9th Revision should match this regular expression:
^((\d\d\d|V\d\d|E[8-9]\d\d)(\.\d{1,2})?)|(\d{1,3}-\d{1,3})$

Example Local Unique Identifiers

277.9   Resolve
401   Resolve
401-405   Resolve
995.81   Resolve
E950   Resolve
V15.01   Resolve

Pattern for CURIES

Compact URIs (CURIEs) constructed from International Classification of Diseases, 9th Revision should match this regular expression:
^icd9:((\d\d\d|V\d\d|E[8-9]\d\d)(\.\d{1,2})?)|(\d{1,3}-\d{1,3})$

Example CURIEs

icd9:277.9
icd9:401
icd9:401-405
icd9:995.81
icd9:E950
icd9:V15.01

References

Other https://www.who.int/about/policies/publishing/copyright

Contributors

• submitter Charles Tapley Hoyt   0000-0003-4423-4370   cthoyt

A summary of the relations in the Bioregistry schema can be found here.

In Collection

International Classifications of Diseases FHIR External Terminologies Synapse.org external links

The metaregistry provides mappings between the Bioregistry and other registries. There are 5 mappings to external registries for this resource with 5 unique external prefixes.

A provider turns a local unique identifiers from a resource into a URI. Many providers are also resolvable as URLs (i.e., they can be used in a web browser).

The local unique identifier 277.9 is used to demonstrate the providers available for International Classification of Diseases, 9th Revision. Some providers may use a different example, which is displayed in the table below. A guide for curating additional providers can be found here.