SEER Inquiry System - Report
Produced: 10/15/2025 8:43 AM
Question 20010157
Inquiry Details
References:
Coding Complex Morph Dx's, 3. Revised August 2002
Question:
Discussion:
Answer:
For tumors diagnosed prior to 2007:
Code the Histology field to 8500/3 [ductal carcinoma] unless the combination is ductal and lobular.
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.