Code that identifies coding system used for occupation and industry. This is a central cancer registry data item (i.e., codes should be applied by a central or regional registry rather than collected from reporting facilities).
 
Formerly Occup/Ind Coding System.

Codes

Note: 2000 Census codes for occupation and industry are recommended for tumors diagnosed on or after January 1, 2003. ²⁶ The 1990 Census codes are recommended for tumors diagnosed before January 1, 2003. ²⁴ For more information, see the U.S. Bureau of the Census website at: at: [https://www.census.gov/topics/employment/industry-occupation/guidance.html](at: https://www.census.gov/topics/employment/industry-occupation/guidance.html).