Alternate Name Item# Length Source of Standard Column #
521 5 550-554

Description
The name for a group of subfields describing the type and behavior of the tumor being reported using
ICD-O-3 codes.

Group names appear only in the data dictionary and Appendix E.

Subfields
Histologic Type ICD-O-3 [522]
Behavior Code ICD-O-3 [523]