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SEER Inquiry System - Report
Produced: 11/03/2025 7:31 AM
Question 20031055
Inquiry Details
References:
#1: SEER Program Code Man, 3rd Ed, 5, 111
#2: 2004 SEER Manual, 3
Question:
Histology (Pre-2007)/Primary Site/Diagnostic Confirmation: How would these fields be coded for a diagnosis of cholangiocarcinoma based on clinical findings only? See Discussion.
Discussion:
We have a case of reported "cholangiocarcinoma" of the liver diagnosed only by a CT of the abdomen. There is no pathologic confirmation. CT ABD: Heterogeneous liver mass suspicious for cholangiocarcinoma; mass causes right portal & right hepatic vein occlusion & right and left biliary duct dilatation....
Should this be coded to cholangiocarcinoma by radiology alone and should it be liver as primary site?
Answer:
For tumors diagnosed prior to 2007:
Code according to the prevailing medical opinion in this case. If no further information can be obtained, code as cholangiocarcinoma of the intrahepatic bile duct.
For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.
