CS Extension

Notes

**Note 1**: Plasmacytomas (9731 and 9734) and Multiple Myeloma (9732) have been moved to the MyelomaPlasmaCellDisorder schema effective with CS version 2: 0203 **Note 2**: For histologies listed in code 100 it is possible to have lymph node involvement; however, at this time, lymph node invovement for these histologies is not collected.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
100 Localized disease:
(Single/solitary/unifocal/isolated):
May be coded for:
Mast cell sarcoma (9740)
Malignant histiocytosis (9750)
Langerhans cell histiocytosis (9751)
Histiocytic sarcoma (9755)
Langerhans cell sarcoma (9756)
Dendritic cell sarcoma (9757, 9758)
Myeloid sarcoma (9930)
NA NA L L
800 Systemic disease

(All histologies including those in 100)
NA NA D D
999 Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in patient record
NA NA D D