This case-sensitive code system https://phinvads.cdc.gov/vads/ViewCodeSystem.action?id=2.16.840.1.114222.4.5.274 defines codes, but no codes are represented here
U.S. Centers for Disease Control and Prevention (CDC)
"CDC Public Health Information Network local coding system used for creating the concepts that are not available in the Standard Development Organization (SDO) Vocabulary like SNOMED CT, LOINC, ICD-9, etc." Versioning numbered according to PHIN VADS convention. For more information, see [https://phinvads.cdc.gov/vads/ViewCodeSystem.action?id=2.16.840.1.114222.4.5.274](https://phinvads.cdc.gov/vads/ViewCodeSystem.action?id=2.16.840.1.114222.4.5.274).
"Most of the information on the CDC and ATSDR websites is not subject to copyright, is in the public domain, and may be freely used or reproduced without obtaining copyright permission." For information and exceptions regarding use of CDC material please see [here](https://www.cdc.gov/other/agencymaterials.html)