CS Lymph Nodes

Notes

**Note 1**: Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in the field CS Mets at DX. **Note 2**: For periesophageal nodes from the celiac axis area up to the cervical area that are not listed in 100 or 400, code as periesophageal, NOS (450). For a descriptive list of these nodal groups, see Part I Section 2 or Figure 10.3 from the AJCC Cancer Staging Atlas, 2nd Ed. or errata for AJCC 7th Ed. chapter 10. Lymph node stations/groups from this chapter are included in parentheses when applicable. **Note 3**: If information about named regional lymph nodes is available, use codes 100, 400, 450 or 500, rather than codes 610, 660, or 710.
Code Description AJCC 7 N TNM 6 N Summary Stage 1977 N Summary Stage 2000 N
000 No regional lymph node involvement N0 N0 NONE NONE
100 Regional lymph nodes:
Left gastric (superior gastric), NOS:
Cardiac
Cardioesophageal
Gastric, left (17)
Gastropancreatic, left
Lesser curvature
Lesser omental
Pericardial (16)
Pancreaticosplenic (pancreaticolienal)
Pancreatoduodenal
Perigastric, NOS
Peripancreatic
Right gastric (inferior gastric), NOS:
Gastrocolic
Gastroduodenal
Gastroepiploic (gastro-omental), right or NOS
Gastrohepatic
Greater curvature
Greater omental
Pyloric, NOS
Infrapyloric (subpyloric)
Suprapyloric
Splenic (lienal), NOS:
Gastroepiploic (gastro-omental), left
Splenic hilar
Nodule(s) in perigastric fat
Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N RN RN
400 Celiac (20)
Hepatic (excluding gastrohepatic, [see code 100]
and hepatoduodenal [see code 420 which is obsolete in CSv2])
Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N D RN
420 OBSOLETE DATA RETAINED V0200
since cardia/EGJ, and the proximal 5 cm of the fundus and body of the stomach have been moved from the Stomach schema in CSv2

For lesser curvature only:
Hepatoduodenal
ERROR: Determine Correct Table for AJCC 6 N D D
450 Paraesophageal, NOS
Periesophageal, NOS, including:
Anterior mediastinal (6)
Aortopulmonary (5)
Diaphragmatic (15)
Paraesophageal, lower (8l)
Paraesophageal, middle (8m)
Paratracheal, lower (4L, 4R)
Paratracheal, upper (2L, 2R)
Posterior mediastinal (3p)
Pulmonary ligament (9)
Subcarinal (tracheal carina) (7)
Supraclavicular (1)
Tracheobronchial (hilar) (10L, 10R)

(See Note 2)
Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N D D
500 Regional lymph node(s), NOS Determine Correct Table for AJCC 7 N Determine Correct Table for AJCC 6 N RN RN
600 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 500 and 610 and CS Site-Specific Factor 1 code 100

Stated as NI [NOS]
N1 N1 RN RN
610 Stated as pathologic N1 with no other information on regional lymph nodes N1 N1 RN RN
650 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 500 and 660 and CS Site-Specific Factor 1 code 200

Stated as N2 [NOS]
N2 N2 RN RN
660 Stated as pathologic N2 with no other information on regional lymph nodes N2 N1 RN RN
700 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 500 and 710 and CS Site-Specific Factor 1 code 300

Stated as N3 [NOS]
N3 N3 RN RN
710 Stated as pathologic N3 with no other information on regional lymph nodes N3 N2 RN RN
800 Lymph nodes, NOS N1 N1 RN RN
999 Unknown; regional lymph nodes not stated
Regional lymph node(s) cannot be assessed
Not documented in patient record
NX NX U U
- For CS Lymph Nodes codes 100-400, 450, and 500 ONLY, when CS Lymph Nodes Eval is 1, 9 and CS Coding System Original is before CS V02.05, the N category is assigned from the Lymph Nodes Clinical Eval Prior to V02.05 AJCC 7 Table, using Regional Nodes Positive and CS Site-Specific Factor 1; when CS Lymph Nodes Eval is 0, 5 OR (CS Lymph Nodes Eval is 1, 9 and CS Coding System Original is at least V02.05), the N category is assigned from Lymph Nodes Clinical Eval V02.05 AJCC 7 Table, using CS Site-Specific Factor 1; when CS Lymph Nodes Eval is 2, 3, 6, 8, or not coded, the N category is determined from the Lymph Nodes Pathologic Evaluation 7th Table Also Used When CS Reg Nodes Eval is Not Coded, using Regional Nodes Positive. - For CS Lymph Nodes codes 100-500 ONLY, when CS Lymph Nodes Eval is 1 or 9, the N category is assigned from the Lymph Nodes Clinical Evaluation 1 or 9 AJCC 6 Table, using Regional Nodes Positive and CS Site-Specific Factor 1; when CS Lymph Nodes Eval is 0 or 5, the N category is assigned from the Lymph Nodes Clinical Evaluation 0 or 5 AJCC 6 Table, using CS Site-Specific Factor 1; when CS Lymph Nodes Eval is 2, 3, 6, 8, or not coded, the N category is determined from the Lymph Nodes Pathologic Evaluation 6th Table Also Used When CS Reg Nodes Eval is Not Coded, using Regional Nodes Positive.