]> M-8720-8790 C01.9 Base of tongue, NOS C02.4 Lingual tonsil &generalsize; CS Extension Note 1: The intrinsic muscles of tongue are four paired muscles within the tongue which control its shape. The extrinsic muscles originate from structures outside the tongue and control its positioning. Note 2: AJCC does not include a Tis or TX 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 3: AJCC does not include a T1 or T2 category for mucosal melanoma of head and neck sites. Note 4: Use codes 460-495 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 5: Use code 305 for localized tumor only if no information is available to assign code 110, 405, 510, or 520. Note 6: Use code 510, 785, 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, intraepithelial, noninvasive NA NA IS IS 100 ERROR NA L L 105 T3 NA L L 110 T3 NA L L 200 ERROR NA L L 300 ERROR NA L L 305 Localized, NOS T3 NA L L 310 ERROR ERROR ERROR ERROR 400 ERROR NA L L 405 T3 NA L L 460 T3 NA RE RE 470 T3 NA RE RE 480 T3 NA D RE 490 T3 NA D D 495 T3 NA D D 500 ERROR NA RE RE 510 T3 NA L L 520 T4a NA L L 523 T4a NA RE RE 525 T4a NA D RE 527 T4a NA D D 530 Sublingual gland T4a NA RE RE 550 T4a NA RE RE 600 ERROR NA RE RE 610 T4a NA D RE 612 T4a NA D D 620 T4a NA D RE 710 T4a NA RE D 715 T4a NA D D 720 T4a NA D D 740 ERROR NA D D 750 T4a NA D D 770 T4a NA D D 775 T4a NA D D 780 Overlying skin T4a NA D D 785 T4a NA L L 790 T4b NA D D 800 ERROR NA D D 801 T4b NA D D 810 T4b NA D D 815 T4NOS NA L L 820 ERROR NA D D 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. Note 5: Level IA Submental nodes have been moved from code 100 in CS Version 1 to code 110. Mandibular nodes are included with Facial nodes. 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 110 N1 NA D 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;