SEER Inquiry System - Report
Produced: 09/23/2023 7:02 AM
For tumors diagnosed prior to 2007:
Code the Histology field to 8263/3 [adenocarcinoma in a tubulovillous adenoma]. Histology codes 8261 [adenocarcinoma in a villous adenoma] and 8263 [adenocarcinoma in a tubulovillous adenoma] are used for non-colorectal sites when the cancer arises in a polyp.
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.