Source 1: WHO Class Digest System Tumors
Source 2: ICD-O-3
Reportability--Liver: Is intraductal papillary mucinous neoplasm (IPMN) of the liver a reportable diagnosis? See Discussion.
Pathology shows: Right liver lobe, partial hepatectomy – intraductal papillary neoplasm with high grade dysplasia.
Intraductal papillary mucinous neoplasm (IPMN) of the liver with high grade dysplasia is reportable. While most IPMNs arise from the pancreas, there exists a subset of IPMN of the biliary tract (BT-IPMN). Code as 8453/2.
For more details, see the Reportability section of the SEER manual, https://seer.cancer.gov/manuals/2016/SPCSM_2016_maindoc.pdf