Collaborative Stage for TNM 7 - Revised 11/15/2009 [ Schema ]
| Code | Description | TNM 7 Map | TNM 6 Map | SS77 Map | SS2000 Map |
| 000 | In situ; noninvasive; intraepithelial | Tis | Tis | IS | IS |
| 100 | Invasive tumor confined to anterior surface of epiglottis with normal vocal cord mobility Stated as T1 with no other information on extension | T1 | T1 | L | L |
| 200 | OBSOLETE DATA CONVERTED V0200 Improve mapping, see code 305 Mucosa of adjacent subsite(s) of oropharynx | ERROR | ERROR | ERROR | ERROR |
| 300 | Localized, NOS | T1 | T1 | L | L |
| 305 | Mucosa of adjacent subsite(s) of oropharynx | T2 | T2 | L | L |
| 310 | Mucosa of vallecula without fixation of larynx | T2 | T2 | L | L |
| 320 | Mucosa of adjacent subsite(s) of supraglottis (including posterior surface of epiglottis) WITHOUT fixation of larynx | T2 | T2 | RE | RE |
| 330 | Larynx, glottic or NOS, without fixation of larynx | T2 | T2 | RE | RE |
| 340 | Mucosa of pyriform sinus, medial wall or NOS, without fixation of larynx | T2 | T2 | RE | RE |
| 350 | Mucosa of base of tongue without fixation of larynx | T2 | T2 | RE | RE |
| 355 | Stated as T2 NOS with no other information on extension | T2 | T2 | L | L |
| 360 | Any structure coded in 350 to 200 with vocal cord fixation | T3 | T3 | RE | RE |
| 370 | Paraglottic space Pre-epiglottic tissues | T3 | T3 | RE | RE |
| 380 | Minor thyroid cartilage erosion (inner cortex) | T3 | T3 | D | D |
| 390 | Hypopharynx, NOS Postcricoid area Pyriform sinus except medial wall (see code 34) | T3 | T3 | RE | RE |
| 430 | 390 + 280 (Any structure in 390 + Minor thyroid cartilage erosion) | T3 | T3 | D | D |
| 435 | Stated as T3 with no other information on extension | T3 | T3 | RE | RE |
| 450 | Soft palate, inferior surface including uvula, or soft palate, NOS | T4a | T4a | RE | RE |
| 470 | Nasopharynx, NOS Soft palate, superior (nasopharyngeal) surface | T4a | T4a | RE | RE |
| 500 | Deep tissues of base of tongue Buccal mucosa (inner cheek) Floor of mouth Gum (gingiva) | T4a | T4a | RE | RE |
| 620 | Soft tissues of neck | T4a | T4a | RE | RE |
| 650 | Pterygoid muscle | T4a | T4a | RE | RE |
| 660 | (450 to 650) + (380 or 430) (Any structure in 450 to 650 + Minor thyroid cartilage erosion coded in 380 or 430) | T4a | T4a | D | D |
| 670 | Invasion through thyroid cartilage (see also code 380) Thyroid cartilage, NOS | T4a | T4a | D | D |
| 680 | Trachea | T4a | T4a | D | D |
| 690 | Esophagus Strap muscles Omohyoid Sternohyoid Sternothyroid Thyrohyoid Thyroid | T4a | T4a | D | D |
| 700 | Extrinsic muscles of tongue: Genioglossus Geniohyoid Hyoglossus Mylohyoid Palatoglossus Styloglossus | T4a | T4a | D | D |
| 725 | Stated as T4a with no other information on extension | T4a | T4a | RE | RE |
| 750 | Prevertebral fascia or muscle Prevertebral space | T4b | T4b | RE | RE |
| 770 | 750 + (660 to 700) (Any structure in 750 + any structure coded in 660 through 700) | T4b | T4b | D | D |
| 800 | Further contiguous extension, including: Anterior 2/3 of tongue Bone Carotid artery (encased) Hard palate Mandible Mediastinal structures Parotid gland | T4b | T4b | D | D |
| 810 | Stated as T4b with no other information on extension | T4b | T4b | D | D |
| 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 Primary tumor cannot be assessed Not documented in patient record | TX | TX | U | U |