]> M-8720-8790 C12.9 Pyriform sinus C13.0 Postcricoid region C13.1 Hypopharyngeal aspect of aryepiglottic fold C13.2 Posterior wall of hypopharynx C13.8 Overlapping lesion of hypopharynx C13.9 Hypopharynx, NOS (laryngopharynx) &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 codes 205 and 310 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, 205, or 320. Note 5: Use code 320, 638, 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 150 ERROR ERROR ERROR ERROR 200 ERROR NA L L 205 T3 NA L L 300 Localized, NOS T3 NA L L 310 T3 NA RE RE 320 T3 NA L L 400 ERROR NA RE RE 410 T4a NA L L 415 T4a NA RE RE 420 T4a NA RE RE 430 T4a NA RE RE 450 ERROR NA RE RE 500 ERROR NA RE RE 510 ERROR ERROR ERROR ERROR 550 T4a NA RE RE 600 T4a NA D D 610 Esophagus T4a NA RE RE 620 Thyroid gland T4a NA D RE 630 T4a NA D RE 635 T4a NA D D 638 T4a NA L L 640 T4b NA RE RE 645 T4b NA D D 650 Carotid artery (encased) T4b NA D RE 655 T4b NA D D 660 ERROR ERROR ERROR ERROR 700 Mediastinal structures T4b NA D D 800 ERROR NA D D 801 T4b NA D D 810 T4b NA D D 815 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 CSSite-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 II nodes have been moved from code 100 in CS Version 1 to code 120. 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 210 ERROR NA D RN 220 ERROR NA D D 290 ERROR NA RN RN 300 ERROR NA RN RN 310 ERROR NA D RN 320 ERROR NA D D 400 ERROR NA RN RN 410 ERROR NA D RN 420 ERROR NA D D 490 ERROR NA RN RN 500 ERROR NA RN RN 510 ERROR NA D RN 520 ERROR NA D D 600 ERROR NA RN RN 700 ERROR NA RN RN 800 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;