Malignant neoplasms of ectopic tissue are to be coded to the site mentioned, e.g., ectopic pancreatic malignant neoplasms are coded to pancreas, unspecified (ICD-10-CM Diagnosis Code C25.9
Malignant neoplasm of pancreas, unspecified
2016 2017 2018 2019 2020 Billable/Specific Code
C25.9).