Name	Value
NAME	BILE DUCT, EXTRAHEPATIC
SURGERY CODING	OTHER/MISCELLANEOUS
CODE	C24.0
DEFAULT PRIMARY SITE GROUP	EXTRAHEPATIC BILE DUCTS
5TH EDITION T-CODES	CBA CODE: TX NET CODE: T0 Carcinoma 'in situ' CODE: Tis Inv subepithelial tiss/fibromuscular layer CODE: T1 Invades subepithelial connective tissue CODE: T1a Invades fibromuscular layer CODE: T1b Invades perifibromuscular connective tissue CODE: T2 TIAS CODE: T3 NA CODE: NA
5TH EDITION T-CODE HELP	Primary Tumor (T) T1b Tumor invades fibromuscular layer T2 Tumor invades perifibromuscular connective tissue T3 Tumor invades adjacent structures: liver, pancreas, duodenum, gallbladder, colon, stomach TX Primary tumor cannot be assessed T0 No evidence of primary tumor Tis Carcinoma 'in situ' T1 Tumor invades subepithelial connective tissue or fibromuscular layer T1a Tumor invades subepithelial connective tissue
SURGERY CODE GROUP-5TH ED	LARYNGOPHARYNX
5TH EDITION N-CODE HELP	Regional Lymph Nodes (N) superior mesentric and/or posterior pancreaticoduodenal lymph nodes NX Regional lymph node(s) cannot be assessed N0 No regional lymph node metastasis N1 Metastasis in cystic duct, pericholedochal and/or hilar lymph nodes (i.e., in the hepatoduodenal ligament) N2 Metastasis in peripancreatic (head only), peridoudenal, periportal, celiac, and/or
6TH EDITION (T) CODES	DESCRIPTION: CBA CODE: TX DESCRIPTION: NET CODE: T0 DESCRIPTION: TIS CODE: Tis DESCRIPTION: Confined to bile duct CODE: T1 DESCRIPTION: Beyond wall of bile duct CODE: T2 DESCRIPTION: Liver, gallbladder, pancreas, etc. CODE: T3 DESCRIPTION: Main portal vein, hepatic artery, etc. CODE: T4 DESCRIPTION: NA CODE: NA
6TH EDITION (T) CODE HELP	Primary Tumor (T) left) or hepatic artery (right or left) T4 Tumor invades any of the following: main portal vein or its branches bilaterally, common hepatic ar- tery, or other adjacent structures, such as the colon, stomach, duodenum, or abdominal wall TX Primary tumor cannot be assessed T0 No evidence of primary tumor Tis Carcinoma 'in situ' T1 Tumor confined to the bile duct histologically T2 Tumor invades beyond the wall of the bile duct T3 Tumor invades the liver, gallbladder, pancreas, and/ or unilateral branches of the portal vein (right or
6TH EDITION (N) CODES	DESCRIPTION: NCA CODE: NX DESCRIPTION: NRN CODE: N0 DESCRIPTION: Regional lymph node metastasis CODE: N1
6TH EDITION (N) CODE HELP	Regional Lymph Nodes (N) NX Regional lymph nodes cannot be assessed N0 No regional lymph node metastasis N1 Regional lymph node metastasis
7TH EDITION (T) CODES	T-CODE: X T-CODE: IS T-CODE: 2A T-CODE: 2B
7TH EDITION (T) CODE HELP	Primary Tumor (T) T2b Tumor invades adjacent hepatic parenchyma T3 Tumor invades unilateral branches of the portal vein or hepatic artery T4 Tumor invades main portal vein or its branches bilaterally; or the common hepatic artery; or the second-order biliary radicals bilaterally; or unilateral second-order biliary radicals with contralateral portal vein or hepatic artery involvement TX Primary tumor cannot be assessed T0 No evidence of primary tumor Tis Carcinoma in situ T1 Tumor confined to the bile duct, with extension up to the muscle layer or fibrous tissue T2a Tumor invades beyond the wall of the bile duct to surrounding adipose tissue
7TH EDITION (N) CODES	N-CODE: X
7TH EDITION (N) CODE HELP	Regional Lymph Nodes (N) NX Regional lymph nodes cannot be assessed N0 No regional lymph node metastasis N1 Regional lymph node metastasis (including nodes along the cystic duct, common bile duct, hepatic artery, and portal vein) N2 Metastasis to periaortic, pericaval, superior mesentery artery, and/or celiac artery lymph nodes
SCHEMA DISCRIMINATOR CODE	CODE: 010 CODE: 020 CODE: 030 CODE: 040 CODE: 050 CODE: 060 CODE: 070
SCHEMA DISCRIMINATOR HELP	Schema Discriminator: Subsite of Extrahepatic Bile Ducts 050 Diffuse involvement More than one subsite involved, subsite of origin not stated 060 Subsite of extrahepatic bile ducts not stated, but treated with combined hepatic and hilar resection 070 Subsite of extrahepatic bile ducts not stated, but treated with pancreaticoduodenectomy 100 OBSOLETE DATA RETAINED V0200 C24.0 - originally coded in CSv1 999 Subsite of extrahepatic bile ducts not stated and not classifiable in codes 050-070 010 Perihilar bile duct(s) Proximal extrahepatic bile duct(s) Hepatic duct(s) 020 Stated as Klatskin tumor 030 Cystic bile duct; cystic duct 040 Common bile duct Common duct, NOS
T & N CODES	BILE DUCT, EXTRAHEPATIC
TYPE	CHOLEDOCHAL DUCT SPHINCTER OF ODDI BILE DUCT, NOS BILIARY DUCT, NOS COMMON BILE DUCT COMMON DUCT CYSTIC BILE DUCT CYSTIC DUCT HEPATIC BILE DUCT HEPATIC DUCT
AJCC STAGING GROUP	EXTRAHEPATIC BILE DUCTS
T-CLASS ENCODING	CBA CODE: TX ACOS CODE: TX NET CODE: T0 ACOS CODE: T0 Carcinoma 'in situ' CODE: Tis ACOS CODE: TIS Invades the mucosa or muscle layer CODE: T1 ACOS CODE: T1 Invades the mucosa CODE: T1a ACOS CODE: T1A Invades the muscle layer CODE: T1b ACOS CODE: T1B Invades the perimuscular connective tissue CODE: T2 ACOS CODE: T2 TIAS CODE: T3 ACOS CODE: T3 NA CODE: NA ACOS CODE: NA
N-CLASS ENCODING	NCA CODE: NX ACOS CODE: NX NRN CODE: N0 ACOS CODE: N0 Cystic duct, pericholedochal/hilar lymph nodes CODE: N1 ACOS CODE: N1 Peripancreatic, periduodenal, periportal etc CODE: N2 ACOS CODE: N2 NA CODE: NA ACOS CODE: NA
EXTENSION CODE SET-1ST ED	EXTRAHEPATIC BILE DUCT(S)
EXTENSION CODE SET-2ND ED	EXTRAHEPATIC BILE DUCT(S)
EXTENSION CODE SET-3RD ED	EXTRAHEPATIC BILE DUCT(S)
LYMPH NODE CODE SET-1ST ED	EXTRAHEPATIC BILE DUCT(S)
LYMPH NODE CODE SET-2ND ED	EXTRAHEPATIC BILE DUCT(S)
LYMPH NODE CODE SET-3RD ED	EXTRAHEPATIC BILE DUCT(S)
SURGERY CODE SET-1ST ED	SG57 OTHER/MISCELLANEOUS
SURGERY CODE SET-2ND ED	SG57 OTHER/MISCELLANEOUS

BILE DUCT, EXTRAHEPATIC (67240) ICDO TOPOGRAPHY (164)