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## ICD-9

| Responsible Owner: [\[%wgt fhir%\]]([%wg fhir%]) Work Group | [Standards Status](versions#levels):[Informative](versions#std-process) |
| --- | --- |

The URL "http://hl7.org/fhir/sid/icd-9" is the FHIR system identifier for codes defined in the ICD-9 US code system. The source of this code system is the CDC, at [http://www.cdc.gov/nchs/icd/icd9.htm](http://www.cdc.gov/nchs/icd/icd9.htm).

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