SEER Inquiry System - Report
Produced: 10/19/2025 9:55 PM
Question 20010129
Inquiry Details
References:
Coding Complex Morph Dx's, 3. Rule 4 (Revised August 2002)
Question:
Discussion:
Answer:
For tumors diagnosed prior to 2007:
Code the Histology field to 8480/3 [colloid carcinoma] per Rule 4. The lesion is colloid type of ductal carcinoma, not ductal carcinoma mixed with colloid carcinoma.
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.