]> C24.0 Extrahepatic bile duct Note: Extrahepatic Bile Duct was a single chapter in the AJCC 6th Edition. It has been divided into two chapters in the AJCC 7th Edition: Perihilar Bile Ducts and Distal Bile Duct. &generalsize; CS Extension Note 1: Distal bile duct tumors arise between the junction of the cystic duct-bile duct and the ampulla of Vater. The classification includes tumors developing in congenital choledochal cysts and tumors arising in the intrapancreatic portion of the common bile duct.Note 2: Involvement within the porta hepatis is coded according to the structures involved: portal vein, common hepatic artery, and common hepatic duct. 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 200 Muscularis propria T1 T1 L L 300 Localized, NOS T1 T1 L L 350 Stated as T1 with no other information on extension T1 T1 L L 400 T2 T2 RE RE 450 Stated as T2 with no other information on extension T2 T2 RE RE 600 ERROR T3 RE RE 605 T3 T3 RE RE 608 T3 T3 RE RE 610 T3 T3 RE RE 620 Duodenum T3 T4 RE RE 630 Stated as T3 with no other information on extension T3 T3 RE RE 650 ERROR T4 RE RE 651 T4 T4 RE RE 660 ERROR T4 RE RE 670 T4 T4 RE RE 700 T4 T4 RE RE 750 ERROR T4 D D 760 Abdominal wall T4 T4 D D 780 T4 T4 D D 800 Further contiguous extension T4 T4 D D 850 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 &generalcstsexteval; CS Lymph Nodes Note 1: Code only regional nodes and nodes, NOS, in this field. Distant nodes are coded in CS Mets at DX. Note 2: Celiac nodes are classified as distant nodes for AJCC 7 staging. These nodes are coded in CS Mets at DX. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 000 No regional lymph node involvement N0 * NONE NONE 150 N1 N1 RN RN 350 N1 N1 D D 355 N1 N1 D D 500 N1 N1 RN RN 800 N1 N1 RN RN 999 NX * U U * For CS Lymph Nodes code 000 and 999, the N category for AJCC 6 staging category is determined by the value in CS Mets at DX as shown in the Lymph Nodes Mets at DX AJCC 6 Table for this schema. &generalregnodeseval; &generalreglnpos; &generalreglnexam; CS Mets at DX Note: Celiac lymph nodes are classified as distant nodes for AJCC 7 staging. They are coded in CS Mets at DX. Code Description TNM 7 Map TNM 6 Map SS77 Map SS2000 Map 00 No distant metastasis M0 M0 NONE NONE 07 M1 M0 D D 10 M1 M1 D D 20 M1 M1 D D 40 M1 M1 D D 45 M1 M1 D D 50 M1 M1 D D 60 M1 M1 D D 99 M0 MX U U &generalmetseval; ¬appssfactor1; ¬appssfactor2; ¬appssfactor3; ¬appssfactor4; ¬appssfactor5; ¬appssfactor6; ¬appnewssf7; ¬appnewssf8; ¬appnewssf9; ¬appnewssf10; ¬appnewssf11; &commonssf12bileducts; &commonssf13bileducts; &commonssf14bileducts; ¬appnewssf15; ¬appnewssf16; ¬appnewssf17; ¬appnewssf18; ¬appnewssf19; ¬appnewssf20; ¬appnewssf21; ¬appnewssf22; ¬appnewssf23; ¬appnewssf24; &commonssf25bileductsdistalperihilar; &commonhistinclusioncarcinomanonnet; &commonhistologyexclusions1; AJCC TNM 7 Stage T N M Stage T0 N0 M0 ERROR T0 N1 M0 UNK T0 NX M0 UNK Tis N0 M0 0 Tis N1 M0 ERROR Tis NX M0 0 T1 N0 M0 IA T1 N1 M0 IIB T1 NX M0 UNK T2 N0 M0 IB T2 N1 M0 IIB T2 NX M0 UNK T3 N0 M0 IIA T3 N1 M0 IIB T3 NX M0 IINOS T4 N0 M0 III T4 N1 M0 III T4 NX M0 III TX N0 M0 UNK TX N1 M0 UNK TX NX M0 UNK T0 N0 M1 IV T0 N1 M1 IV T0 NX M1 IV Tis N0 M1 ERROR Tis N1 M1 ERROR Tis NX M1 ERROR T1 N0 M1 IV T1 N1 M1 IV T1 NX M1 IV T2 N0 M1 IV T2 N1 M1 IV T2 NX M1 IV T3 N0 M1 IV T3 N1 M1 IV T3 NX M1 IV T4 N0 M1 IV T4 N1 M1 IV T4 NX M1 IV TX N0 M1 IV TX N1 M1 IV TX NX M1 IV &commonstagebileductsdistalperihilar; &commonsummarystage; Lymph Nodes Mets at DX AJCC 6 Table Note: For CS Lymph Nodes codes 000-999, the N category for AJCC 6 staging is determined by the value in CS Mets at DX as shown in this table. CS Mets at DX CS Lymph Nodes 000 0 CS Lymph Nodes 999 999 00 N0 NX 07 N1 N1 10 N0 NX 20 N1 N1 40 N0 NX 45 N1 N1 50 N0 NX 60 N0 NX 99 NX NX