SEER Inquiry System - Report
Produced: 10/06/2025 8:57 AM
Question 20071008
Inquiry Details
References:
2004 SEER Manual, 86. Rule 3
Question:
Discussion:
Answer:
For cases diagnosed 1/1/04-12/31/06, code histology to 8524 [Lobular mixed with other types of carcinoma]. Assuming there is no mention of in situ, Histology Coding Rule 3 applies: Use a mixed histology code if one exists
For cases diagnosed 2007-2014, 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.