California Cancer Reporting System Standards Volume I: Abstracting and Coding Procedures
County at DX documents the county the patient lived in at the time of diagnosis.
For California residents, enter the code for the county of residence at the time of diagnosis. Some abstracting software will automatically enter the code if the county name is entered.
Consult maps or reference works as needed to determine the correct county. If your software vendor provides FIPS codes for this data field, see Appendix L.1 and L.2 for code conversions.
Required California county codes, in alphabetical order, are listed in Appendix L.1.
Required California county codes, in numerical order, are listed in Appendix L.2.
For foreign residents, enter the country of residence in this field. This information will also be captured in the "Address at Diagnosis - Country" field (III.2.5.6).
Enter code CAN for Canada, NOS, or the specific code for the known Canadian province.
Canadian province codes are listed in Appendix B.
For non-United States, use the country of residence.
Country codes, in alphabetical order by Country, are listed in Appendix D.1.
Country codes, in order by Code, are listed in Appendix D.2.