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National Cancer Data Base - Data Dictionary PUF 2015

Surgical Margins

DD_category: 
PUF Data Item Name: 
RX_SUMM_SURGICAL_MARGINS
NAACCR Item #: 
1320
length: 
1
Allowable values: 
0-3, 7-9
Description: 
Records the final status of the surgical margins after resection of the primary tumor.
Registry Coding Instructions: 
  • Record the margin status as it appears in the pathology report.
  • Codes 0-3 are hierarchical; if two codes describe the margin status, use the numerically higher code.
  • If no surgery of the primary site was performed, code 8.
  • For lymphomas with a lymph node primary site (C77.0-C77.9), code 9.
  • For an unknown or ill-defined primary (C76.0-C76.8, C80.9) or for hematopoietic, reticuloendothelial, immunoproliferative, or myeloproliferative disease, code 9.
  • For Brain and CNS sites, the NCDB converts codes 0, 1, 2, 3, and 7 to code 9 for this item due to unreliability.

Code Label Definition
0 No residual tumor All margins are grossly and microscopically negative.
1 Residual tumor, NOS Involvement is indicated, but not otherwise specified.
2 Microscopic residual tumor Cannot be seen by the naked eye.
3 Macroscopic residual tumor Gross tumor of the primary site which is visible to the naked eye.
7 Margins not evaluable Cannot be assessed (indeterminate).
8 No primary site surgery No surgical procedure of the primary site. Diagnosed at autopsy.
9 Unknown or not applicable It is unknown whether a surgical procedure to the primary site was performed; death certificate-only; for lymphomas with a lymph node primary site; an unknown or ill-defined primary; or for hematopoietic, reticuloendothelial, immunoproliferative, or myeloproliferative disease.