Organization |
Field Name |
ID |
Required |
---|---|---|---|
KCR |
EOD Schema Discriminator 1 |
30122 |
|
SEER |
Schema Discriminator 1 |
3926 |
|
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.)
Code |
Description |
Disease |
---|---|---|
1 |
Perihilar bile duct(s) |
25: Perihilar Bile Ducts |
3 |
Cystic bile duct; cystic duct |
24: Cystic Duct |
4 |
Distal bile duct |
26: Distal Bile Ducts |
5 |
Diffuse involvement |
25: Perihilar Bile Ducts |
6 |
Stated as middle extrahepatic bile duct |
25: Perihilar Bile Ducts |
7 |
Stated as middle extrahepatic bile duct |
26: Distal Bile Ducts |
9 |
Extrahepatic bile ducts, NOS |
25: Perihilar Bile Ducts |