Behavior ICD-O-3
This input is used in derivation
Notes
See the [SEER Program Coding Manual](https://seer.cancer.gov/tools/codingmanuals/index.html) for coding instructions.NAACCR Item
NAACCR #523| Behavior | Description | 
|---|---|
| 0 | Benign | 
| 1 | Uncertain Benign/Malig | 
| 2 | In Situ | 
| 3 | Malignant Primary |