CS Lymph Nodes
Notes
**Note**: Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in CS Mets at DX. Peridiaphragmatic nodes are classified as regional nodes in AJCC 7 staging. They are now coded in CS Lymph Nodes.| 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, ipsilateral, intrapulmonary: Hilar: Bronchopulmonary Proximal lobar Pulmonary root Intrapulmonary: Interlobar Lobar Segmental Subsegmental Peri/parabronchial |
N1 | N1 | RN | RN |
| 110 | Stated as N1 with no other information on regional lymph nodes | N1 | N1 | RN | RN |
| 200 | OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 210, 220, 230, 250 Regional lymph nodes, ipsilateral, mediastinal: Aortic [above diaphragm], NOS: Aorto-pulmonary window Ascending aorta Peri/para-aortic Phrenic Subaortic Carinal: Tracheobronchial Tracheal bifurcation Internal mammary (parasternal) Mediastinal, NOS: Anterior Posterior (tracheoesophageal) Pericardial Peri/paraesophageal [below carina] Peri/paratracheal, NOS: Lower peritracheal (azygos) Upper paratracheal Pretracheal and retrotracheal, NOS: Precarinal Prevascular Pulmonary ligament Subcardial Subcarinal Peridiaphragmatic Stated as N2 |
N2 | N2 | RN | RN |
| 210 | Regional lymph nodes, ipsilateral, mediastinal: Aortic (above diaphragm), NOS: Aorto-pulmonary window Ascending aorta Peri/para-aortic Phrenic Subaortic Carinal: Tracheobronchial Tracheal bifurcation Internal mammary (parasternal) Mediastinal, NOS: Anterior Posterior (tracheoesophageal) Pericardial Peri/paraesophageal (below carina) Peri/paratracheal, NOS: Lower peritracheal (azygos) Upper paratracheal Pretracheal and retrotracheal, NOS: Precarinal Prevascular Pulmonary ligament Subcardial Subcarinal |
N2 | N1 | RN | RN |
| 220 | Regional lymph nodes, ipsilateral, mediastinal: Peridiaphragmatic |
N2 | N0 | D | D |
| 230 | 220 + (100, 210) | N2 | N1 | D | D |
| 250 | Stated as N2 with no other information on regional lymph nodes | N2 | N2 | RN | RN |
| 500 | Regional lymph nodes, NOS | N1 | N1 | RN | RN |
| 700 | Contralateral or bilateral nodes specified in codes 100, 210, 220 or 230 Ipsilateral, contralateral or bilateral nodes: Scalene (inferior deep cervical) Supraclavicular (transverse cervical) Stated as N3 with no other information on regional lymph nodes |
N3 | N3 | D | D |
| 800 | Lymph nodes, NOS | N1 | N1 | RN | RN |
| 999 | Unknown; regional lymph nodes not stated Regional lymph nodes cannot be assessed Not documented in patient record |
NX | NX | U | U |