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 350, 450, 610, and 620 for extension involving the mucosa only of adjacent sites. Use higher codees for extension involving deeper tissues of the primary or adjacent sites. **Note 4**: Use code 300 for localized tumor only if no information is available to assign code 105, 150, 640, or 660. **Note 5**: Use code 640, 735, 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 on one side confined to: Lamina propria Submucosa |
ERROR: | NA | L | L |
| 105 | Tumor confined to mucosa of soft palaate or uvula on one side | T3 | NA | L | L |
| 150 | Tumor confined to mucosa of soft palate or uvula crossing midline | T3 | NA | L | L |
| 200 | OBSOLETE DATA RETAINED V0200 Musculature invaded |
ERROR: | NA | L | L |
| 300 | Localized, NOS | T3 | NA | L | L |
| 350 | Extension involving mucosa only: Buccal mucosa (inner cheek) |
T3 | NA | RE | RE |
| 400 | OBSOLETE DATA RETAINED V0200 Tumor crosses midline |
ERROR: | NA | L | L |
| 450 | Extension involving mucosa only: Lateral pharyngeal wall Tonsillar pillars and fossae Tonsils |
T3 | NA | RE | RE |
| 500 | OBSOLETE DATA RETAINED V0200 Buccal mucosa (inner cheek) Gum (gingiva), upper |
ERROR: | NA | RE | RE |
| 600 | OBSOLETE DATA RETAINED V0200 Lateral pharyngeal wall Tonsillar pillars and fossae Tonsils |
ERROR: | NA | RE | RE |
| 610 | Tumor involving mucosa only: Hard palate |
T3 | NA | RE | RE |
| 620 | Tumor involving mucosa only: Nasopharynx |
T3 | NA | D | D |
| 640 | Stated as T3 with no other information on extension | T3 | NA | L | L |
| 650 | OBSOLETE DATA RETAINED V0200 Hard palate |
ERROR: | NA | RE | RE |
| 660 | Involvement of deep soft tissue or musculature of soft palate or uvula | T4a | NA | L | L |
| 665 | 660 + (350, 450, or 610) Involvement of deep soft tissue or musculature of soft palate or uvula plus mucosal involvement of any structure in code 350, 450, or 610 |
T4a | NA | RE | RE |
| 670 | Involvement of deep soft tissue or musculature of any structure in code 350, 450, or 610 | T4a | NA | RE | RE |
| 675 | Nasal cavity | T4a | NA | RE | D |
| 680 | Pterygoid muscle lateral Pterygoid plates |
T4a | NA | RE | D |
| 685 | (665 - 680) + 620 Involvement in code 660 - 680 plus mucosal involvement of nasopharynx |
T4a | NA | D | D |
| 690 | Involvement of deep soft tissue or musculature of nasopharynx | T4a | NA | D | D |
| 700 | Mandible Maxilla Maxillary sinus (antrum) Palatine bone (bone of hard palate) Bone excluding pterygoid plates, base of skull Cartilage, NOS Bone, NOS |
T4a | NA | D | D |
| 710 | Pterygoid muscle, medial or NOS | T4a | NA | D | D |
| 720 | Tongue, NOS Deep (extrinsic) muscle of tongue: Genioglossus Geniohyoid Hyoglossus Mylohyoid Palatoglossus Styloglossus |
T4a | NA | D | D |
| 730 | Larynx Hypopharynx |
T4a | NA | D | D |
| 735 | Stated as T4a with no other information on extension | T4a | NA | D | D |
| 740 | OBSOLETE DATA RETAINED V0200 Maxillary antrum (sinus) Nasopharynx, lateral or NOS |
ERROR: | NA | D | D |
| 770 | OBSOLETE DATA CONVERTED V0200 See code 675 Nasal cavity |
ERROR: | ERROR: | ERROR: | ERROR: |
| 780 | OBSOLETE DATA CONVERTED V0200 See code 680 Pterygoid muscle, lateral Pterygoid plates Note: For medial pterygoid muscle or pterygoid muscle, NOS, see code 710 |
ERROR: | ERROR: | ERROR: | ERROR: |
| 790 | OBSOLETE DATA RETAINED V0200 770 or 780 with any of 700 to 760 |
ERROR: | NA | D | D |
| 800 | Base of skull Carotid artery (encased) |
T4b | NA | D | D |
| 801 | Further contiguous extension including: Brain Dura Lower cranial nerves (IX, X, XI, XII) Masticator space Mediastinal structures Prevertebral 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 |