California Cancer Reporting System Standards Volume I: Abstracting and Coding Procedures
This field captures the date of the last information obtained on the primary (tumor) being followed. It is important because it collects the information on each tumor when the patient has multiple.
See sections Entering Dates and Date Format and Date Flag Guide for further information on coding and entering dates. Consult with your software vendor for specific data entry instructions.
Enter the date of last contact with the patient where there was specific information about the tumor being reported by tumor status.
This field has been added for patients with multiple primaries.
This date can be different depending on follow-up for each tumor.