CS Extension
This input is used for staging
Notes
**Note 1**: AJCC does not include a Tis or TX category for melanoma of mucosa of head and neck sites. CS Extension codes of 000 and 999 are mapped to NA and AJCC stage group is derived as NA. **Note 2**: AJCC does not include a T1 or T2 category for mucosal melanoma of head and neck sites. **Note 3**: Use codes 250 and 305 for extension involving the mucosa only of adjacent sites. Use higher codes for extension involving deeper tissues of the primary or adjacent sites. **Note 4**: Use code 275 for localized tumor only if no information is available to assign code 105, 205, 250, 370, 375, or 405. **Note 5**: Use code 340, 775, 810, or 815 if the physician's assignment of T category is the only information available about the extent of the tumor.Default
999NAACCR Item
NAACCR #2810| Code | Description | AJCC 7 T | AJCC 6 T | Summary Stage 1977 T | Summary Stage 2000 T |
|---|---|---|---|---|---|
| 000 | In situ, intraepithelial noninvasive | NA | NA | IS | IS |
| 100 | OBSOLETE DATA RETAINED V0200 Invasive tumor with normal vocal cord mobility confined to: Supraglottis (one subsite): Aryepiglottic fold Arytenoid cartilage Corniculate cartilage Cuneiform cartilage Epilarynx, NOS False cords Ventricular bands Ventricular cavity Ventricular fold Infrahyoid epiglottis Laryngeal cartilage, NOS Laryngeal (posterior) surface of epiglottis Suprahyoid epiglottis (including tip, lingual {anterior} and laryngeal surfaces) |
ERROR: | NA | L | L |
| 105 | Tumor confined to mucosa of supraglottis: Supraglottis (one subsite): Aryepiglottic fold Arytenoid cartilage: Corniculate cartilage Cuneiform cartilage Epilarynx, NOS False cords: Ventricular bands Ventricular cavity Ventricular fold Infrahyoid epiglottis Laryngeal cartilage, NOS Laryngeal (posterior) surface of epiglottis Suprahyoid epiglottis (including tip, lingual {anterior} and laryngeal surfaces) WITH normal vocal cord mobility |
T3 | NA | L | L |
| 200 | OBSOLETE DATA RETAINED V0200 Tumor involves more than one subsite of supraglottis WITHOUT fixation or NOS |
ERROR: | NA | L | L |
| 205 | Extension involving mucosa only of more than one subsite of supraglottis listed in code 105 WITHOUT impaired vocal cord mobility or fixation of larynx or NOS |
T3 | NA | L | L |
| 250 | Extension involving mucosa only of glottic larynx or subglottis WITHOUT impaired vocal cord mobility or fixation of larynx or NOS |
T3 | NA | L | L |
| 275 | Localized, NOS | T3 | NA | L | L |
| 300 | OBSOLETE DATA RETAINED V0200 Tumor involves adjacent regions(s) of larynx |
ERROR: | NA | RE | RE |
| 305 | Extension involving mucosa only of adjacent regions(s) outside supraglottis including: Mucosa of base of tongue Vallecula Medial wall of pyriform sinus WITHOUT impaired vocal cord mobility or fixation of larynx or NOS |
T3 | NA | RE | RE |
| 340 | Stated as T3 with no other information on extension | T3 | NA | L | L |
| 350 | OBSOLETE DATA RETAINED V0200 Impaired vocal cord mobility |
ERROR: | NA | L | L |
| 370 | Involvement of deep tissues of any structure in code 105, 205, or 250 | T4a | NA | L | L |
| 375 | Involvement of any structures in code 105, 205, or 250 WITH impaired vocal cord mobility |
T4a | NA | L | L |
| 400 | OBSOLETE DATA RETAINED V0200 Tumor limited to larynx WITH vocal cord fixation |
ERROR: | NA | L | L |
| 405 | Involvement of any structures in supraglottic larynx larynx, and subglottic larynx WITH vocal cord fixation |
T4a | NA | L | L |
| 410 | (370, 375, 405) + 305 Involvement of any structures in code 370, 375, or 405 plus mucosal involvement of any structure in code 305 |
T4a | NA | RE | RE |
| 420 | Involvement of deep tissue of any structure in code 305 | T4a | NA | RE | RE |
| 425 | Involvement of any structure in code 305 WITH impaired vocal cord mobility |
T4a | NA | RE | RE |
| 450 | OBSOLETE DATA RETAINED V0200 Localized, NOS |
ERROR: | NA | L | L |
| 520 | Paraglottic space WITHOUT vocal cord fixation |
T4a | NA | RE | RE |
| 530 | Minor thyroid cartilage erosion (inner cortex) WITHOUT vocal cord fixation |
T4a | NA | RE | D |
| 600 | OBSOLETE DATA RETAINED V0200 Tumor involves region outside the supraglottis WITHOUT fixation, including: Medial wall of pyriform sinus Mucosa of base of tongue Vallecula |
ERROR: | NA | RE | RE |
| 605 | Tumor involves further regions outside the supraglottis including: Deep tissues or musculature: Base of tongue Medial wall pyriform sinus Vallecula Hypopharynx, NOS Pre-epiglottic tissues Postcricoid area Pyriform sinus. NOS WITHOUT vocal cord fixation |
T4a | NA | RE | RE |
| 620 | Involvement of any structures in codes 520, 530, and 605 WITH vocal cord fixation |
T4a | NA | RE | RE |
| 630 | 605 + 530 Any structure in code 605 plus minor thyroid cartilage erosion |
T4a | NA | RE | D |
| 650 | OBSOLETE DATA CONVERTED V0200 See code 605 Hypopharynx, NOS Postcricoid area Pre-epiglottic tissues |
ERROR: | ERROR: | ERROR: | ERROR: |
| 660 | OBSOLETE DATA CONVERTED V0200 See code 605 Deep base of tongue |
ERROR: | ERROR: | ERROR: | ERROR: |
| 670 | Cricoid cartilage | T4a | NA | RE | RE |
| 675 | 670 + 530 | T4a | NA | RE | RE |
| 680 | OBSOLETE DATA CONVERTED V0200 See code 530 Minor thyroid cartilage erosion (e.g., inner cortex) |
ERROR: | ERROR: | ERROR: | ERROR: |
| 700 | Extension to/through: Esophagus Oropharynx Soft tissues of neck Thyroid cartilage (except minor erosion, see code 530) Thyroid gland |
T4a | NA | D | D |
| 720 | Extension to/through: Strap muscle(s): Omohyoid Sternohyoid Sternothyroid Thyrohyoid Skin |
T4a | NA | D | D |
| 730 | Extension to/through: Deep extrinsic muscles of tongue Trachea |
T4a | NA | D | D |
| 775 | Stated as T4a with no other information on extension | T4a | NA | L | L |
| 800 | Contiguous extension, including: Carotid artery (encased) Mediastinal structures Prevertebral space |
T4b | NA | D | D |
| 801 | Further contiguous extension including: Base of skull Brain Dura Lower cranial nerves (IX, X, XI, XII) Masticator space |
T4b | NA | D | D |
| 810 | Stated as T4b with no other information on extension | T4b | NA | D | D |
| 815 | Stated as T4 [NOS] with no other information on extension | T4NOS | NA | L | L |
| 950 | OBSOLETE DATA RETAINED V0200 No evidence of primary tumor |
ERROR: | NA | U | U |
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record |
NA | NA | U | U |