CS Extension
This input is used in derivation
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 400-450 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 520. **Note 5**: Use code 470, 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, intrapeithelial, noninvasive | NA | NA | IS | IS |
| 100 | OBSOLETE DATA RETAINED V0200 Invasive tumor confined to: Labial mucosa (inner lip) Lamina propria Multiple foci Submucosa (superficial invasion) Vermilion surface Superficial extension to: Skin of lip Subcutaneous soft tissue of lip |
ERROR: | NA | L | L |
| 105 | Tumor confined to mucosa of lower lip: Labial mucosa (inner lip) Vermilion surface |
T3 | NA | L | L |
| 200 | OBSOLETE DATA CONVERTED V0200 See code 520 Musculature |
ERROR: | ERROR: | ERROR: | ERROR: |
| 300 | Localized, NOS | T3 | NA | L | L |
| 400 | Extension involving mucosa only: Buccal mucosa (inner cheek) Commissure (for lower lip) Opposite lip (both lips) |
T3 | NA | RE | RE |
| 410 | Extension involving mucosa only: Lower gingiva Gingiva, NOS |
T3 | NA | RE | RE |
| 440 | Extension involving mucosa only: Upper gingiva |
T3 | NA | D | RE |
| 450 | Extension involving mucosa only: Floor of mouth Tongue |
T3 | NA | D | D |
| 470 | Stated as T3 with no other information on extension | T3 | NA | L | L |
| 500 | OBSOLETE DATA RETAINED V0200 Buccal mucosa (inner cheek) Commissure Opposite (both) lip(s) |
ERROR: | NA | RE | RE |
| 510 | OBSOLETE DATA RETAINED V0200 Gingiva |
ERROR: | NA | RE | RE |
| 520 | Involvement of deep soft tissue or musculature of lower lip Soft tissue, NOS |
T4a | NA | L | L |
| 530 | 520 + (400 or 410) Involvement of deep soft tissue or musculature of lower lip plus mucosal involvement of any structure in code 400 or 410 |
T4a | NA | RE | RE |
| 540 | Involvement of deep soft tissue or musculature of any structure in code 400 | T4a | NA | RE | RE |
| 550 | Involvement of deep tissue or periosteum of lower gingiva | T4a | NA | RE | RE |
| 700 | Cartilage of mandible Cortical bone of mandible Mandible, NOS Cartilage, NOS Cortical bone, NOS Bone, NOS except maxilla, base of skull |
T4a | NA | RE | RE |
| 705 | (520, 540, or 700) + 440 Involvement of any structure in codes 520 - 700 plus mucosa of upper gingiva |
T4a | NA | D | RE |
| 710 | Deep tissue or periosteum of upper gingiva | T4a | NA | D | RE |
| 740 | Skin of nose | T4a | NA | RE | D |
| 743 | 740 + (440 or 710) Skin of nose plus mucosa or deep tissue of upper gingiva |
T4a | NA | D | D |
| 745 | (520 - 740) + 450 Involvement of any structure in codes 520 - 740 plus mucosa of floor of mouth or tongue |
T4a | NA | D | D |
| 748 | Involvement of deep soft tissue or musculature of floor of mouth or tongue Inferior alveolar nerve |
T4a | NA | D | D |
| 750 | OBSOLETE DATA RETAINED V0200 Tongue |
ERROR: | NA | D | D |
| 755 | Extrinsic muscle of tongue: Genioglossus Hyoglossus Palatoglossus Styloglossus |
T4a | NA | D | D |
| 760 | Skin of face/neck | T4a | NA | D | D |
| 765 | Cartilage of maxilla Cortical bone of maxilla Maxilla, NOS |
T4a | NA | D | D |
| 770 | OBSOLETE DATA RETAINED V0200 Cortical bone (other than code 700) Floor of mouth Inferior alveolar nerve |
ERROR: | NA | D | D |
| 775 | Stated as T4a with no other information on extension | T4a | NA | L | L |
| 790 | 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 including: 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 |