Schema Discriminator 1: BileDuctsDistal/BileDuctsPerihilar/CysticDuct
This input is used for staging
Notes
**Note:** A schema discriminator is used to discriminate for primary site C240 (extrahepatic bile ducts) for the subsite in which the tumor arose. * **Chapter 24: Gallbladder (see code 3)** Per AJCC 8th edition, the gallbladder tapers into the cystic duct * **Chapter 25: Perihilar Bile Ducts (see codes 1, 5, 6, 9)** Per AJCC 8th edition, perihilar (or proximal) cholangiocarcinomas involve the main biliary confluence of the right and left hepatic ducts and comprise 50-70% of all cases of bile ducts carcinomas * **Chapter 26: Distal Bile Ducts ( see codes 4, 7)** Per AJCC 8th edition, these tumors have their center located between the confluence of the cystic duct and common hepatic duct and the Ampulla of Vater (excluding ampullary carcinomas.)Default
9NAACCR Item
NAACCR #3926Metadata
SSDI| Code | Description | Disease |
|---|---|---|
| 1 | Perihilar bile duct(s) Proximal extrahepatic bile duct(s) Hepatic duct(s) | 25: Perihilar Bile Ducts |
| 3 | Cystic bile duct; cystic duct | 24: Cystic Duct |
| 4 | Distal bile duct Common bile duct Common duct, NOS | 26: Distal Bile Ducts |
| 5 | Diffuse involvement More than one subsite involved, subsite of origin not stated | 25: Perihilar Bile Ducts |
| 6 | Stated as middle extrahepatic bile duct AND treated with combined hepatic and hilar resection | 25: Perihilar Bile Ducts |
| 7 | Stated as middle extrahepatic bile duct AND treated with pancreaticoduodenectomy | 26: Distal Bile Ducts |
| 9 | Extrahepatic bile ducts, NOS | 25: Perihilar Bile Ducts |