]> M-8720-8790 C04.0 Anterior floor of mouth C04.1 Lateral floor of mouth C04.8 Overlapping lesion of floor of mouth C04.9 Floor of mouth, NOS &generalsize; CS Extension 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 code 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, 405, 460, or 510. Note 4: Use code 460,775, 810, or 815 if the physician's assignment of T category is the only information available about the extent of the tumor. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 000 In situ, intrapeithelial, noninvasive NA NA IS IS 100 ERROR NA L L 105 Tumor confined to mucosa of floor of mouth T3 NA L L 300 Localized, NOS T3 NA L L 400 ERROR NA L L 405 Tumor confined to mucosa of floor of mouth crossing midline T3 NA L L 450 T3 NA RE RE 460 Stated as T3 with no other information on extension T3 NA L L 500 ERROR NA RE RE 510 T4a NA L L 520 T4a NA RE RE 530 T4a NA RE RE 600 ERROR NA RE RE 620 T4a NA L L 625 T4a NA RE RE 628 T4a NA RE RE 630 ERROR NA RE RE 635 T4a NA RE RE 640 ERROR ERROR ERROR ERROR 700 T4a NA RE RE 740 Subcutaneous soft tissue of chin/neck T4a NA RE RE 760 Skin of undersurface of chin/neck T4a NA RE RE 770 ERROR ERROR ERROR ERROR 775 Stated as T4a with no other information on extension T4a NA L L 800 T4b NA D D 801 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 ERROR NA U U 999 NA NA U U &commonexteval76NA; CS Lymph Nodes Note 1: For head and neck schemas, this field includes all lymph nodes defined as Levels I-VII and Other by AJCC. The complete definitions are provided in the General Rules, Section 2. Note 2: For head and neck schemas, additional information about lymph nodes (size of involved nodes, extracapsular extension, levels involved, and location of involved nodes above or below the lower border of the cricoid cartilage) is coded in CS Site-Specific Factors 1, 3-9. Note 3: For head and neck cancers, if lymph nodes are described only as "supraclavicular", try to determine if they are in Level IV (deep to the sternocleidomastoid muscle, in the lower jugular chain) or Level V (in the posterior triangle, inferior to the transverse cervical artery) and code appropriately. If the specific level cannot be determined, consider them as Level V nodes. Note 4: The description of lymph nodes has been standardized across the head and neck schemas. All lymph node levels and groups listed here are considered regional nodes for AJCC staging. Summary Stage 1977 and Summary Stage 2000 divide these nodes into regional and distant groups. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 000 No regional lymph node involvement N0 NA NONE NONE 100 N1 NA RN RN 120 N1 NA D D 180 N1 NA RN RN 190 ERROR NA RN RN 200 ERROR NA RN RN 220 ERROR NA D D 290 ERROR NA RN RN 300 ERROR NA RN RN 320 ERROR NA D D 400 ERROR NA RN RN 420 ERROR NA D D 490 ERROR NA RN RN 500 ERROR NA RN RN 520 ERROR NA D D 600 ERROR NA RN RN 700 ERROR NA RN RN 800 Lymph nodes, NOS N1 NA RN RN 999 NX NA U U &commonnodeseval76NA; &generalreglnpos; &generalreglnexam; &commonmetsmelanomaheadandneck; &commonmetseval76NA; &commonssf1melanomaheadandneck; &commonssf2headneck; &commonssf3headneck; &commonssf4headneck; &commonssf5headneck; &commonssf6headneck; &commonssf7headandneck; &commonssf8headandneck; &commonssf9headandneck; &commonssf10headandneck; &commonssf11headandneck; ¬appnewssf12; ¬appnewssf13; ¬appnewssf14; ¬appnewssf15; ¬appnewssf16; ¬appnewssf17; ¬appnewssf18; ¬appnewssf19; ¬appnewssf20; ¬appnewssf21; ¬appnewssf22; ¬appnewssf23; ¬appnewssf24; ¬appnewssf25; &commonhistinclusionmelanoma; ¬appsajcchistdrivensites; &commonstagemucosalmelanomaheadandnecktnm7; ¬appcsstage; &commonsummarystage;