SEER Inquiry System - Report
Produced: 10/20/2025 4:14 AM
Question 20010156
Inquiry Details
References:
#1: Histology Coding Com Decision. 2003
#2: 2004 SEER Manual, 11, 13
Question:
Discussion:
Answer:
For cases diagnosed 1998-2003:
Code this case as two primaries if the tumors are separate. Separate tumors have clear (negative) margins. If the tumors are not separate, code as one primary.
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.