Collaborative Stage for TNM 7 - Revised 09/30/2009 [ Schema ]
| Code | Description | TNM 7 Map | TNM 6 Map | SS77 Map | SS2000 Map |
| 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 |
| 200 | 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 |
| 500 | Regional lymph nodes, NOS | N1 | N1 | RN | RN |
| 700 | Contralateral or bilateral nodes specified in codes 10 or 20 Ipsilateral, contralateral or bilateral nodes: Scalene (inferior deep cervical) Supraclavicular (transverse cervical) Stated as N3 | N3 | N3 | D | D |
| 800 | Lymph nodes, NOS | N1 | N1 | RN | RN |
| 999 | Unknown; not stated Regional lymph nodes cannot be assessed Not documented in patient record | NX | NX | U | U |