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SEER Inquiry System - Report
Produced: 10/18/2025 6:54 AM
Question 20210017
Inquiry Details
References:
2021 SEER Manual. Mets at Dx fields
Question:
Update to current manual/Mets at diagnosis fields--Lymphoma: Are distant metastases possible for a lymphoma with a primary site of lymph nodes? The instructions in the SEER manual tell us to assign code 8 in each of the Mets at Dx fields for a lymphoma originating in lymph nodes.
Discussion:
Answer:
This is a correction to the SEER manual. Lymphomas originating in lymph nodes (C77) could have distant metastases to any site except lymph nodes. The following corrections to the manual apply now and will appear in the next version of the manual.
Remove C770-C779 from the instruction for assigning code 8 on the following pages.
Page 135 Mets at Dx--Bone
Page 137 Mets at Dx--Brain
Page 139 Mets at Dx--Liver
Page 141 Mets at Dx--Lung
Page 145 Mets at Dx--Other
Example
Biopsy of axillary lymph node: Diffuse Large B-Cell lymphoma. Lymph nodes involved above and below the diaphragm, multiple nodules seen in lung, lesions in liver. Bone marrow biopsy positive for DLBLC. Per Hematopoietic manual, primary site would be C778 for multiple lymph node regions involved.
Mets at Dx--Bone-0
Mets at Dx--Brain-0
Mets at Dx--Liver-1
Mets at Dx--Lung-1
Mets at Dx--Distant Lymph Nodes-8
Mets at Dx--Other-1
