]> C31.0 Maxillary sinus Note: Laterality must be coded for this site. &generalsize; CS Extension Note 1: Involvement of or extension to bone ncludes any type of tumor extension to the bone, such as erosion, invasion, extension, penetration, or destruction. Note 2: Use code 300 for localized tumor only if no information is available to assign code 100. Note 3: Code Base of skull, NOS only if no information available to code to more specific bony structures in skull. Note 4: Use code 665, 685, 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 Tis Tis IS IS 100 T1 T1 L L 300 Localized, NOS T1 T1 L L 400 T2 T2 RE RE 600 T3 T3 RE RE 650 ERROR ERROR ERROR ERROR 660 T3 T3 RE RE 665 Stated as T3 with no other information on extension T3 T3 RE RE 675 Base of skull, NOS T4a T4a RE RE 680 T4a T4a RE RE 685 Stated as T4a with no other information on extension T4a T4a RE RE 700 ERROR ERROR ERROR ERROR 710 T4b T4b RE RE 750 T4b T4b RE RE 800 Further contiguous extension T4b T4b D D 810 Stated as T4b with no other information on extension T4b T4b RE RE 815 Stated as T4 [NOS] with no other information on extension T4NOS T4NOS RE RE 950 No evidence of primary tumor T0 T0 U U 999 TX TX U U &generalcstsexteval; 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: If laterality of lymph nodes is not specified, assume nodes are ipsilateral. Midline nodes are considered ipsilateral. Note 4: 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 5: 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 6: Levels III and IV 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 N0 N0 NONE NONE 100 ^ * RN RN 120 ^ * D D 180 Stated as N1 with no other information on regional lymph nodes ^ * RN RN 190 Stated as N2a with no other information on regional lymph nodes ^ * RN RN 200 Multiple positive ipsilateral nodes listed in code 100 ^ * RN RN 220 ^ * D D 290 Stated as N2b with no other information on regional lymph nodes ^ * RN RN 300 ^ * RN RN 320 ^ * D D 400 ^ * RN RN 420 ^ * D D 490 Stated as N2c with no other information on regional lymph nodes ^ * RN RN 500 ^ * RN RN 520 ^ * D D 600 Stated as N2 [NOS] with no other information on regional lymph nodes ^ * RN RN 700 Stated as N3 with no other information on regional lymph nodes ^ * RN RN 800 Lymph nodes, NOS N1 N1 RN RN 999 NX NX U U ^ For CS Lymph Nodes codes 100-700 ONLY, the N category for AJCC 7 staging is assigned based on the value of CS Site-Specific Factor 1, Size of Lymph Nodes, as shown in the Lymph Nodes Size Table for this schema. * For CS Lymph Nodes codes 100-700 ONLY, the N category for AJCC 6 staging is assigned based on the value of CS Site-Specific Factor 1, Size of Lymph Nodes, as shown in the Lymph Nodes Size Table for this schema. &generalregnodeseval; &generalreglnpos; &generalreglnexam; &commonmetslips; &generalmetseval; &commonssf1headneck; &commonssf2headneck; &commonssf3headneck; &commonssf4headneck; &commonssf5headneck; &commonssf6headneck; &commonssf7headandneck; &commonssf8headandneck; &commonssf9headandneck; &commonssf10headandneck; &commonssf11headandneck; ¬appnewssf12; ¬appnewssf13; ¬appnewssf14; ¬appnewssf15; ¬appnewssf16; ¬appnewssf17; ¬appnewssf18; ¬appnewssf19; ¬appnewssf20; ¬appnewssf21; ¬appnewssf22; ¬appnewssf23; ¬appnewssf24; ¬appnewssf25; &commonhistinclusioncarcinoma; &commonhistologyexclusions1; &commonstageheadandnecktnm7; &commonheadandneckajcc6; &commonsummarystage; &commonnoderangeanttongue;