Collaborative Stage for TNM 7 - Revised 01/05/2010 [ Schema ]
| Code | Description | TNM 7 Mapping | TNM 6 Mapping | SS77 Map | SS2000 Map |
| 000 | None; no regional lymph node involvement | N0 | NA | NONE | NONE |
| 100 | Regional lymph nodes: Rectosigmoid: Paracolic/pericolic Perirectal Rectal Nodule(s) or foci in pericolic fat/adjacent mesentery/mesocolic fat Rectum: Perirectal Rectal, NOS Nodule(s) or foci in perirectal fat | N1 | NA | RN | RN |
| 200 | Regional lymph node(s): Rectosigmoid: Colic, NOS Left colic Hemorrhoidal, superior or middle Inferior mesenteric Middle rectal Sigmoidal (sigmoid mesenteric) Superior rectal Rectum: Hemorrhoidal, superior, middle or inferior Inferior mesenteric Internal iliac (hypogastric) Obturator Rectal, superior, middle, or inferior Sacral, NOS Lateral (laterosacral) Middle (promontorial) (Gerota's node) Presacral Sacral promontory Sigmoidal (sigmoid mesenteric) | N1 | NA | RN | RN |
| 300 | Mesenteric, NOS Regional lymph node(s), NOS | N1 | NA | RN | RN |
| 400 | Stated as N1, NOS | N1 | NA | RN | RN |
| 450 | OBSOLETE DATA RETAINED V0200 Stated as N2 pathologic | ERROR | NA | RN | RN |
| 800 | Lymph nodes, NOS | N1 | NA | RN | RN |
| 999 | Unknown; not stated Regional lymph node(s) cannot be assessed Not documented in patient record | N0 | NA | U | U |