Generic Terms
Important
These modules are archived and should only be referenced for historical purposes.
Although these generic terms are not "good" diagnoses according to the pathologists, they are quite prevalent on cytology reports and death certificates, so we needed a place for them in ICD-O-3.
Stem cell leukemia had a code in ICD-O-1 and it has been returned to ICD-O-3.
NOS = Not Otherwise Specified
| Code | Description |
|---|---|
| 8046/3 | Non-small cell carcinoma, NOS |
| 8935/3 | Stromal sarcoma, NOS |
| 9473/3 | PNET, NOS |
| 9591/3 | B-cell lymphoma, NOS |
| 9702/3 | T-cell lymphoma, NOS |
| 9801/3 | Stem cell leukemia |
| 9860/3 | Non-lymphocytic leukemia, NOS |
It is hoped (and suggested) that these codes will be used to mark cases for more in-depth analysis later to find a more precise diagnosis.
Suggested Citation
SEER Training Modules: Generic Terms. U.S. National Institutes of Health, National Cancer Institute. Cited 01 January 2026. Available from: https://training.seer.cancer.gov.