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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: Cancer. 2014 Dec 1;120(0 0):3793–3806. doi: 10.1002/cncr.29056

TABLE 3b.

Rectal Cancer: Site-Specific Factors (SSFs) Description, Codes, and Applicability, SEER 18, 2010 Cases

Known Unknown Total
Codes N % Codes N % N
SSF 1: Carcinoembryonic Antigen (CEA) 010, 020, 030 5214 53.9 997, 998, 999 4464 46.1 9678
SSF 2: Clinical Assessment of Regional Lymph Nodes 000-120 7626 78.8 200, 400, 999 2052 21.2 9678
    2a. Select Reg LN eval = 0, 1, 5, 9 000-120 3549 72.9 200, 400, 999 1317 28.1 4866
        2b. Select Reg LN eval = 0, 1, 5, 9, and CS LN = 100-300, 800 010-120 654 58.2 000, 200, 400, 999 469 41.8 1123
    SSF 3: Carcinoembryonic Antigen (CEA) Lab Value 000-980 5194 53.7 997, 998, 999 4484 46.3 9678
SSF 4: Tumor Deposits 000-081 6281 64.9 990, 998, 999 3397 35.1 9678
    4a. Selected surgery codes 30-80 000-081 5081 82.8 990, 998, 999 1053 17.2 6134
    SSF 6: Circumferential Resection Margin (CRM) 000-981, 990-996 4972 51.4 998, 999 4706 48.6 9678
    6a. Selected surgery codes 30-80 000-981, 990-996 4525 73.8 998, 999 1609 26.2 6134
    SSF 8: Perineural Invasion 000-010 6263 64.7 998, 999 3415 35.3 9678
    8a.Selected surgery codes 30-80 000-010 5043 82.2 998, 999 1091 17.8 6134
    SSF 9:KRAS 010-020 716 7.4 997, 998, 999 8962 92.6 9678
        9a. KRAS stage IV only 010-020 362 21.3 997, 998, 999 1340 78.7 1702

Source: National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program: SEER 18 geographic areas: States of Connecticut, New Mexico, Utah, California (4 areas: San-Francisco, San Jose-Monterey, Los Angeles, Greater California), Hawaii, Iowa, New Jersey, Louisiana, Kentucky, Georgia (3 areas: Atlanta, Rural Georgia, and remainder of the state), Alaska Native Registry, and metropolitan areas of Detroit, Michigan and Seattle (Western Washington), Washington.

LN: Lymph nodes; Reg: Regional; eval: evaluation; CS: Collaborative Stage

Note: there were no cases for not applicable (codes 988 or blank).