Stomach (excluding Gastrointestinal Stromal Tumor and Neuroendocrine Tumor)

Primary Site Histology Schema Discriminator: EsophagusGEJunction (EGJ)/Stomach Staging Type
C161-C162 8000-8152, 8154-8231, 8243-8245, 8247-8248, 8250-8576, 8940-8950, 8980-8990 000, 030, 999 TNM 7 and Summary Stage
C161-C162 8577-8934, 8951-8979, 8991-9136, 9141-9582, 9700-9701 000, 030, 999 Summary Stage only
C163-C166, C168-C169 8000-8152, 8154-8231, 8243-8245, 8247-8248, 8250-8576, 8940-8950, 8980-8990 <Any value> TNM 7 and Summary Stage
C163-C166, C168-C169 8577-8934, 8951-8979, 8991-9136, 9141-9582, 9700-9701 <Any value> Summary Stage only

If you are working with a site/histology that only summary stages and you need to directly code it, please use the SEER Summary Stage 2000 manual

Notes

C161 Fundus of stomach
C162 Body of stomach
C163 Gastric antrum
C164 Pylorus
C165 Lesser curvature of stomach, NOS
C166 Greater curvature of stomach, NOS
C168 Overlapping lesion of stomach
C169 Stomach, NOS

Note 1: This schema is based on the UICC chapter Stomach, pages 73-77.

  • Primary sites C165, C166, C168, and C169 are listed in the chapter heading but are not specified in the anatomic subsites in this chapter of the UICC manual; however, they are included in this schema and TNM staged if appropriate histology criteria are met
  • Site-Specific Factor 25, Schema Discriminator: EsophagusGEJunction (EGJ)/Stomach is used to discriminate between esophagusGEjunction and stomach which are coded to ICD-O-3 codes C160-C162.

Note 2: In addition to directly assigning TNM, Summary Stage 2000 (SS2000) must be captured. If directly assigning SS2000, use the Stomach chapter on page 80 of the SS2000 on-line manual.

Main Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Clinical T <BLANK> Yes NAACCR #940
tnmClinT
None
Clinical N <BLANK> Yes NAACCR #950
tnmClinN
None
Clinical M <BLANK> Yes NAACCR #960
tnmClinM
None
TNM Clin Stage Group 99 Yes NAACCR #970
tnmClinStageGroup
None
Pathologic T <BLANK> Yes NAACCR #880
tnmPathT
None
Pathologic N <BLANK> Yes NAACCR #890
tnmPathN
None
Pathologic M <BLANK> Yes NAACCR #900
tnmPathM
None
TNM Path Stage Group 99 Yes NAACCR #910
tnmPathStageGroup
None
SSF2: Specific Location of Tumor 988 No NAACCR #2890
csSiteSpecificFactor2
None None
SSF13: Carcinoembryonic Antigen (CEA) 988 No NAACCR #2867
csSiteSpecificFactor13
None None
SSF14: Carcinoembryonic Antigen (CEA) Lab Value 988 No NAACCR #2868
csSiteSpecificFactor14
None None
SSF15: Carbohydrate Antigen 19-9 (CA 19-9) Lab Value 988 No NAACCR #2869
csSiteSpecificFactor15
None None
SSF25: Schema Discriminator: EsophagusGEJunction (EGJ)/Stomach 999 Yes NAACCR #2879
csSiteSpecificFactor25
All None

Additional Data Items

Name Default Value Used for Staging NAACCR Item Required By Metadata
Year of Diagnosis <BLANK> No NAACCR #390
dateOfDiagnosis
None
Primary Site <BLANK> Yes NAACCR #400
primarySite
None
Histology <BLANK> Yes NAACCR #522
histologicTypeIcdO3
None
Behavior <BLANK> Yes NAACCR #523
behaviorCodeIcdO3
None
RX Summ Systemic/Surgery Sequence <BLANK> Yes NAACCR #1639
rxSummSystemicSurSeq
None
RX Summ Surgery/Radiation Sequence <BLANK> Yes NAACCR #1380
rxSummSurgRadSeq
None
Regional Nodes Positive <BLANK> Yes NAACCR #820
regionalNodesPositive
None