This code system http://terminology.hl7.org/CodeSystem/USCOC defines many codes, but they are not represented here

 <status value="retired"/> <experimental value="false"/> <date value="2021-11-09T10:00:00+10:00"/> <publisher value="TBD - External Body"/> <contact> <name value="US Census Bureau"/> </contact> <description value="Coding system of United States Census Occupation Codes, published by the US Governmetn Bureau of the Census. Doucmentation and Crosswalk mapping between the COC and the SOC and NAICS code systems available at http://www.census.gov/hhes/www/ioindex/view.html"/> <caseSensitive value="true"/> <content value="not-present"/> </CodeSystem>