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 350-370 for extension involving the mucosa only of adjacent sites. Use higher codes for extension involving the 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, 470, or 510. **Note 5**: Use code 470, 725, 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 #2810Code | 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 confined to: Lamina propria Submucosa |
ERROR: | NA | L | L |
105 | Tumor confined to mucosa of oral site | T3 | NA | L | L |
200 | OBSOLETE DATA CONVERTED V0200 See code 510 Musculature invaded |
ERROR: | ERROR: | ERROR: | ERROR: |
300 | Localized, NOS | T3 | NA | L | L |
350 | Extension involving mucosa only to adjacent sites in oral cavity including tongue | T3 | NA | RE | RE |
370 | Extension involving mucosa only: Inferior surface of soft palate including uvula Lateral pharyngeal wall Lingual surface of epiglottis Oropharynx, NOS Vallecula |
T3 | NA | RE | RE |
470 | Stated as T3 with no other information on extension | T3 | NA | L | L |
500 | OBSOLETE DATA RETAINED V0200 Adjacent oral cavity |
ERROR: | NA | RE | RE |
510 | Involvement of deep soft tissue or musculature of structure in code 105 Soft tissue, NOS |
T4a | NA | L | L |
520 | 510 + (350 or 370) Involvement of deep soft tissue or musculature of structure in code 105 plus mucosal involvement of any structure in code 350 or 370 |
T4a | NA | RE | RE |
550 | Deep soft tissue or musculature of any structure in code 350 | T4a | NA | RE | RE |
570 | Deep soft tissue or musculature of any structure in code 370 | T4a | NA | RE | RE |
600 | OBSOLETE DATA RETAINED V0200 Extension to oropharynx Inferior surface of soft palate Lateral pharyngeal wall Lingual surface of epiglottis Vallecula |
ERROR: | NA | RE | RE |
690 | Cortical bone of mandible Cortical bone of maxilla Mandible, NOS Maxilla, NOS Maxillary antrum (sinus) Cortical bone, NOS Cartilage, NOS Bone, NOS excluding base of skull |
T4a | NA | D | D |
700 | OBSOLETE DATA RETAINED V0200 Extension to adjacent structures: Mandible Maxilla Maxillary antrum (sinus) Nasal cavity Skin of face/neck Tongue |
ERROR: | NA | D | D |
705 | Nasal cavity Skin of face/neck |
T4a | NA | D | D |
710 | Deep (extrinsic) muscle of tongue: Genioglossus Hyoglossus Palatoglossus Styloglossus |
T4a | NA | D | D |
720 | OBSOLETE DATA CONVERTED V0200 See code 750 Skull |
ERROR: | ERROR: | ERROR: | ERROR: |
725 | Stated as T4a with no other information on extension | T4a | NA | L | L |
750 | Contiguous extension: Base of skull Carotid artery (encased) Masticator space Pterygoid plates |
T4b | NA | D | D |
800 | OBSOLETE DATA RETAINED V0200 Further contiguous extension |
ERROR: | NA | D | D |
801 | Further contiguous extension: Brain Dura Lower cranial nerves (IX, X, XI, XII) 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 |