EOD Primary Tumor

Notes

**Note 1:** Osseous (medullary) plasmacytomas (9731) are localized tumors occurring in the bone. There may be soft tissue extension. **Note 2:** Extraosseous (extramedullary) plasmacytomas (9734) are plasma cell neoplasms that arise in tissues other than bone. The most common sites are the upper respiratory tract, the gastrointestinal tract, lymph nodes, bladder, central nervous system (CNS), breast, thyroid, testis and skin. **Note 3:** Lymphoplasmacytic lymphoma (9671) and Waldenstrom Macroglobulinemia (9761) are now collected with the plasma cell disorders. These are systemic diseases and should always be coded 700.
Code Description SS2018 T
100 Single plasmacytoma occurring in bone (osseous or medullary) (9731) Single plasmacytoma, NOS (9731) WITH or WITHOUT soft tissue extension L
200 Single plasmacytoma (9734) Single plasmacytoma occurring outside of bone (extraosseous or extramedullary) (9734) L
500 Multiple plasmacytomas (9731, 9734) Multiple osseous or medullary plasmacytomas (9731) Multiple extraosseous or extramedullary plasmacytomas (9734) D
700 Lymphoplasmacytic lymphoma (9671) Waldenstrom Macroglobulinemia (9761) D
999 Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record Death Certificate Only U
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