NAACCR Item #523: Behavior Code ICD-O-3
|Item #||Length||Source of Standard||Year Implemented||Version Implemented||Year Retired||Version Retired|
NAACCR XML: Tumor.behaviorCodeIcdO3
Behavior Code (CoC)
ICD-O-3 Behaviour (CCCR)
Code for the behavior of the tumor being reported using ICD-O-3. NAACCR adopted ICD-O-3 as the standard coding system for tumors diagnosed beginning January 1, 2001, and later recommended that prior cases be converted from ICD-O-2. See Behavior (92-00) ICD-O-2 , for ICD-O-2 codes.
Juvenile astrocytoma is coded as borderline in ICD-O-3; North American registries report as 9421/3.
Clarification of Required Status
Behavior is required by all standard-setting organizations for tumors diagnosed on or after January 1, 2001, and recommended (by conversion from ICD-O-2 codes) for tumors diagnosed before 2001.
When the histologic type is coded according to the ICD-O-3, the histology code must be reported in Histologic Type ICD-O-3 , with behavior coded in Behavior Code ICD-O-3 .
For information on required status for related data items for histologic type and behavior when coded according to ICD-O-2, see Histology (92-00) ICD-O-2  and Behavior (92-00) ICD-O-2 .
Valid codes are 0-3. See ICD-O-3, 14 page 66, for behavior codes and definitions.