Alternate Name Item # Length Source of Standard Implemented Year Implemented Version Retired Year Retired Version Column #
Date of Initial Diagnosis (CoC)
390 8 SEER/CoC 530 - 537
Description
Date of initial diagnosis by a recognized medical practitioner for the tumor being reported whether clinically or microscopically confirmed. See Chapter X for date format.

For more discussion on determining date of diagnosis, consult the SEER Program Coding and Staging Manual or CoC FORDS manual.