Collaborative Stage for TNM 7 - Revised 11/12/2010 [ Schema ]
| Code | Description | TNM 7 Map | TNM 6 Map | SS77 Map | SS2000 Map | 
| 000 | In situ, intraepithelial, noninvasive | Tis | Tis | IS | IS | 
| 100 | Invasive tumor confined to mucosa of maxillary sinus (antrum)  WITHOUT erosion or destruction of bone Stated as T1 with no other information on extension  | T1 | T1 | L | L | 
| 300 | Localized, NOS | T1 | T1 | L | L | 
| 400 | Tumor causing bone erosion or destruction  EXCLUDING extension to: Posterior wall of maxillary sinus (see code 600) Pterygoid plates (see code 680) INCLUDING: Palatine bone, hard palate Middle nasal meatus Nasal cavity (floor, lateral wall, septum, turbinates) Stated as T2 with no other information on extension  | T2 | T2 | RE | RE | 
| 600 | Ethmoid sinus, anterior Floor or medial wall of orbit Floor or posterior wall of maxillary sinus Maxilla, NOS Subcutaneous tissues  | T3 | T3 | RE | RE | 
| 650 | OBSOLETE DATA CONVERTED V0200 See code 600 Bone of the posterior wall of maxillary sinus Invasion of maxilla, NOS  | ERROR | ERROR | ERROR | ERROR | 
| 660 | Ethmoid sinus, posterior Ethmoid sinus, NOS Pterygoid fossa  | T3 | T3 | RE | RE | 
| 665 | Stated as T3 with no other information on extension | T3 | T3 | RE | RE | 
| 675 | Base of skull, NOS | T4a | T4a | RE | RE | 
| 680 | Anterior orbital contents Skin of cheek Pterygoid plates Infratemporal fossa Cribriform plate Sphenoid sinus Frontal sinus  | T4a | T4a | RE | RE | 
| 685 | Stated as T4a with no other information on extension | T4a | T4a | RE | RE | 
| 700 | OBSOLETE DATA REVIEWED AND CHANGED V0203 Recode involved structures to code 675, 680, or 710 as appropriate Base of skull Orbital contents including eye Pterygomaxillary or temporal fossa Soft palate  | ERROR | ERROR | ERROR | ERROR | 
| 710 | Pterygomaxillary fossa Temporal fossa Soft palate  | T4b | T4b | RE | RE | 
| 750 | Further contiguous extension including: Brain Clivus Cranial nerves (other than V2, maxillary division of trigeminal nerve) Dura Middle cranial fossa Nasopharynx Orbital apex  | T4b | T4b | RE | RE | 
| 800 | Further contiguous extension | T4b | T4b | D | D | 
| 810 | Stated as T4b with no other information on extension | T4b | T4b | RE | RE | 
| 815 | Stated as T4 [NOS] with no other information on extension | T4NOS | T4NOS | RE | RE | 
| 950 | No evidence of primary tumor | T0 | T0 | U | U | 
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record  | TX | TX | U | U |