]> M-8153, 8240-8242, 8246, 8249 C18.0 Cecum C18.2 Ascending colon C18.3 Hepatic flexure of colon C18.4 Transverse colon C18.5 Splenic flexure of colon C18.6 Descending colon C18.7 Sigmoid colon C18.8 Overlapping lesion of colon C18.9 Colon, NOS Note 1: For this schema, AJCC only stages well-differentiated neuroendocrine tumors. Note that the "concept" of well-differentiated is reflected in the histology code. The grade code is not needed in order to select the correct schema, but does need to be coded. Note 2: This schema is also used for carcinoid tumors and malignant gastrinomas. &commontumorsizenetcolon; CS Extension Note 2: AJCC does not include a Tis category for Neuroendocrine Tumors (NET) of the colon. CS Extension code 000 is mapped to TX for AJCC stage and in situ Summary Stage. Note 1: Ignore intraluminal extension to adjacent segment(s) of colon/rectum or to the ileum from the cecum; code depth of invasion or extracolonic spread as indicated. Note 3: The assignment of the T1 categories for NETs of the colon/rectum is based on tumor size. A physician's statement of the T category may be used to code both CSTumor Size and/or CS Extension if this is the only information in the medical record regarding one or both of these fields. However the two fields are coded independently; for example, the record may document size but not extension,. Use codes 170, 180, 190, 210, 410, and 810 as appropriate to code CS Extension based on a statement of T when no other extension information is available. Note 4: Use code 300 for localized tumor only if no information is available to assign a more specific code. Note 5: Use code 570 for tumor with macroscopic adhesions to other organs or structures and for pathologically confirmed tumor in adhesions. However, if no tumor is present in adhesions upon microscopic examination, use lower codes to describe the microscopically confirmed depth of tumor invasion for these cases. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 000 TX Tis IS IS 050 TX Tis IS IS 100 ^ Tis L L 110 ^ Tis L L 120 ^ Tis L L 130 ^ T1 L L 140 ^ T1 L L 150 ^ T1 L L 160 ^ T1 L L 170 Stated as T1a with no other information on extension ^ T1 L L 180 Stated as T1b with no other information on extension ^ T1 L L 190 Stated as T1 [NOS] with no other information on extension ^ T1 L L 200 Muscularis propria invaded T2 T2 L L 210 Stated as T2 with no other information on extension T2 T2 L L 300 ^ T1 L L 400 T3 T3 L L 410 Stated as T3 with no other information on extension T3 T3 L L 420 ERROR ERROR ERROR ERROR 450 T3 T3 RE RE 458 Fat, NOS T3 T3 RE RE 460 T3 T3 RE RE 490 ERROR ERROR ERROR ERROR 500 T4 T4 RE RE 550 T4 T4 RE RE 570 Adherent to other organs or structures, NOS T4 T4 RE RE 600 T4 T4 RE RE 650 T4 T4 RE RE 660 T4 T4 RE RE 700 T4 T4 D D 750 T4 T4 D D 800 T4 T4 D D 810 Stated as T4 with no other information on extension T4 T4 RE RE 950 No evidence of primary tumor T0 T0 U U 999 TX TX U U ^ For CSExtension codes 100-190 and 300 ONLY, the T category for AJCC7 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size AJCC 7 Table for this schema. &generalcstsexteval; CS Lymph Nodes Note 1: Code only regional nodes and nodes, NOS in this field. Distant nodes are coded in the CS Mets at DX. Note 2: Inferior mesenteric nodes are coded in CS Mets at DX for cecum, ascending colon, transverse colon, and hepatic flexure. Superior mesenteric nodes are coded in CS Mets at DX for all colon sites. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 000 No regional lymph node involvement N0 N0 NONE NONE 050 Nodule(s) or foci in pericolic fat/adjacent mesentery/mesocolic fat N1 * RN RN 100 N1 * RN RN 110 N1 * RN RN 200 N1 * RN RN 210 N1 * RN RN 220 N1 * D RN 300 N1 * RN RN 400 N1 N1 RN RN 410 Stated as N1 with no other information on regional lymph nodes N1 N1 RN RN 450 ERROR N2 RN RN 800 Lymph nodes, NOS N1 N1 RN RN 999 NX NX U U * For CSLymph Nodes codes 050-300 ONLY: when CS Lymph Nodes Eval is 0, 1, 5, or 9, the N category for AJCC 6 staging is assigned as shown in the Lymph Nodes Clinical Evaluation AJCC 6 Table, using Regional Nodes Positive and CS Site-Specific Factor 2; when CS Regional Nodes Eval is 2, 3, 6, 8, or not coded, the N category for AJCC 6 staging is assigned as shown in the Lymph Nodes Pathologic Evaluation AJCC 6 Table Also Used When CS Reg Nodes Eval is Not Coded, using Regional Nodes Positive. &generalregnodeseval; &commonreglnpos_active; &generalreglnexam; CS Mets at DX Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 00 No distant metastasis M0 M0 NONE NONE 08 M1 M1 RN D 10 M1 M1 D D 40 M1 M1 D D 50 M1 M1 D D 60 M1 M1 D D 99 M0 MX U U &generalmetseval; &commonssf1gistappendix; &commonssf2netcolon; ¬appssfactor3; ¬appssfactor4; ¬appssfactor5; ¬appssfactor6; ¬appnewssf7; ¬appnewssf8; ¬appnewssf9; ¬appnewssf10; &commonssf11netcolon; ¬appnewssf12; ¬appnewssf13; ¬appnewssf14; ¬appnewssf15; &commonssf16netcolon; &commonssf17netcolon; ¬appnewssf18; ¬appnewssf19; ¬appnewssf20; ¬appnewssf21; ¬appnewssf22; ¬appnewssf23; ¬appnewssf24; ¬appnewssf25; &commonhistinclusionnet; &commonhistologyexclusions1; &commonstagenetcolorecttnm7; &commonstagecolorect; &commonsummarystage; Extension Size AJCC 7 Table Note: For CS Extension codes 100-190 and 300 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size, as shown in this table. CS Extension CS Tumor Size 000 0 CS Tumor Size 001-009 1 9 CS Tumor Size 010-020 10 20 CS Tumor Size 021-989 21 989 CS Tumor Size 990 990 CS Tumor Size 991 991 CS Tumor Size 992 992 CS Tumor Size 993-995 993 995 CS Tumor Size 998 998 CS Tumor Size 999 999 100 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX 110 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX 120 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX 130 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX 140 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX 150 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX 160 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX 170 ERROR T1a T1b T2 T1a T1a T1a T2 ERROR T1a 180 ERROR T1a T1b T2 T1a T1b T1b T2 ERROR T1b 190 ERROR T1a T1b T2 T1a T1NOS T1NOS T2 ERROR T1NOS 300 ERROR T1a T1b T2 T1a T1a T1NOS T2 ERROR TX &commonnetcolorectalclin; &commonnetcolorectalpath;