California Cancer Reporting System Standards Volume I: Abstracting and Coding Procedures
Year first seen is the year the patient was first seen for this reportable primary.
Enter the four digit year during which the patient was first seen at the reporting facility for diagnosis or treatment of the neoplasm reported in this abstract. For patients seen at the end of the year, use the year of diagnosis as the year first seen for this primary.
Example:
A patient is admitted to the reporting facility in December 1992 and is diagnosed in January 1993.
Assign 1993 as the year first seen for this primary.