SEER Inquiry System - Report
Produced: 06/24/2026 12:51 PM
Question 20130032
Inquiry Details
References:
Heme & Lymph Manual & DB
Question:
Discussion:
Patient complained of pain in the right side and back right upper flank area. CT shows an anterior mediastinal mass and abnormal appearance of skeleton. CXR: Age indeterminate T8 compression fracture. CT chest: abnormal appearance of skeleton. Correlate clinically for myeloma or mets. Acute T5 or T8 compression fractures. Anterior mediastinal mass which may represent thymoma, lymph nodes or metastases. 03/22/12 Metastatic Series: Nonspecific hypodensities in pelvis, left hip and right acromion. Possibility of myeloma can't be totally excluded. Bone marrow right post iliac crest core biopsy, clot section and aspirate: plasma cell myeloma.
Should the primary site be coded to the bone marrow because the diagnosis of plasma cell myeloma was supported by radiologic evidence of multiple lytic lesions? The bone marrow biopsy confirmed the radiology reports.
Answer:
Updated May 2026
Code the primary site to C421 [bone marrow] per the Heme DB. The Primary Site(s) section in the Heme DB indicates the primary site for plasma cell myeloma is C421 [bone marrow].
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