California Cancer Reporting System Standards Volume I: Abstracting and Coding Procedures for Hospitals
To code behavior, use the best information in the pathology report, regardless of whether it appears in the microscopic description, final diagnosis, or comments. If an AJCC staging form provides the best information, use it if the form is signed by a physician. ICD-O-3 assigns a behavior code as the fifth digit of the histology number following the slash. For example, in the number 8012/3 for large cell carcinoma, the 3 is the behavior code.
Codes are listed below:
Code |
Description |
/0* |
Benign |
/1* |
Uncertain whether benigh or malignant |
|
Borderline Malignancy (except cystadenomas in the range 844-849) |
|
Low Malignant Potential |
/2 |
Carcinoma in Situ |
|
Intraepithelial |
|
Non-infiltrating |
|
Non-invasive |
/3 |
Malignant, Primary Site |
/6** |
Malignant, Metastatic Site |
|
Malignant, Secondary Site |
/9** |
Malignant, uncertain whether primary or metastatic site |
* Not reportable to the California Cancer Registry, except for brain and CNS tumors, beginning with cases diagnosed January 1, 2001.
** Reportable behavior, but enter code 3.