Collaborative Stage for TNM 7 - Revised 10/11/2010 [ Schema ]
| Code | Description | TNM 7 Map | TNM 6 Map | SS77 Map | SS2000 Map |
| 000 | In situ, intraepithelial, noninvasive | NA | NA | IS | IS |
| 100 | Invasive tumor confined to mucosa of one of the following: Frontal sinus Sphenoid sinus | NA | NA | L | L |
| 300 | Localized, NOS | NA | NA | L | L |
| 400 | More than one accessory sinus invaded Destruction of bony wall of sinus | NA | NA | RE | RE |
| 500 | Hard palate Nasal cavity: Floor Lateral wall Nasal cavity, NOS Septum Turbinates | NA | NA | RE | RE |
| 600 | Bone: Facial bones Maxilla Orbital structures Pterygoid fossa Zygoma | NA | NA | RE | RE |
| 700 | Brain Cranial nerves Muscles: Masseter Pterygoid Nasopharynx Orbital contents, including eye Soft tissue Skin | NA | NA | RE | RE |
| 800 | Further contiguous extension | NA | NA | D | D |
| 950 | No evidence of primary tumor | NA | NA | U | U |
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record | NA | NA | U | U |