]> M-8720-8790 C31.1 Ethmoid sinus &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: Extension to structures in codes 180, 185, and 400 and higher may be from one or both ethmoid sinuses. Note 4: Use codes 180 and 185 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 170 for localized tumor only if no information is available to assign codes 105, 165, 190, 200, or 210. Note 6: Use code 190, 725, 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 NA NA IS IS 105 T3 NA L L 120 ERROR NA L L 140 ERROR NA RE RE 160 ERROR NA L L 165 T3 NA L L 170 Localized, NOS T3 NA L L 175 T3 NA RE RE 180 T3 NA RE RE 185 T3 NA RE RE 190 T3 NA L L 200 T4a NA L L 210 T4a NA L L 215 T4a NA RE RE 218 T4a NA RE RE 220 T4a NA L L 240 ERROR ERROR ERROR ERROR 260 T4a NA L L 265 T4a NA RE RE 270 T4a NA RE RE 300 ERROR ERROR ERROR ERROR 400 ERROR NA RE RE 450 T4a NA RE RE 620 ERROR ERROR ERROR ERROR 630 ERROR ERROR ERROR ERROR 640 T4a NA RE RE 650 ERROR NA RE RE 660 Hard palate T4a NA D D 700 ERROR NA RE RE 710 T4a NA RE RE 720 ERROR NA D D 725 T4a NA L L 750 T4b NA RE RE 760 ERROR NA RE RE 770 T4b NA D D 780 ERROR NA D D 800 T4b 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 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 III and Level IV nodes have been moved from code 100 in CS Version 1 to code 120. Retropharyngeal nodes have been moved from code 120 to code 100. Mandibular nodes are included with Facial nodes. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 000 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 N1 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;