Retrospective Cohort Study
Copyright ©The Author(s) 2023.
World J Gastroenterol. Jun 28, 2023; 29(24): 3825-3842
Published online Jun 28, 2023. doi: 10.3748/wjg.v29.i24.3825
Table 1 Definition of cholangiocarcinoma: World Health Organization International Classification of Diseases codes included
Sub-type
ICD10 topography code
ICDO2 histology code
Intrahepatic (iCCA)C221 (Intrahepatic bile duct carcinoma)All
Extrahepatic (eCCA)C240 (Extrahepatic bile duct carcinoma)All
CCA otherC248 (Overlapping lesion of biliary tract), C249 (Biliary tract, unspecified)All
C220, C222, C223, C224, C227, C2298160