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SEER Inquiry System - Report
Produced: 10/27/2025 10:06 PM
Question 20061138
Inquiry Details
References:
2004 SEER Manual, 10, 13. Rule 6
Question:
Multiple Primaries (Pre-2007)/Histology (Pre-2007)--Breast: How many primaries are to be abstracted and how is the histology field(s) coded when a nipple biopsy demonstrates Paget disease and a separate biopsy in the same breast demonstrates inflammatory breast carcinoma? See Discussion.
Discussion:
Should Paget disease be coded as the histology because it has a higher histology code than inflammatory carcinoma?
Answer:
For tumors diagnosed prior to 2007:
Abstract the inflammatory carcinoma as one primary and the Paget disease as a separate primary. The first three digits of the histology codes for these histologies are different (8530 and 8540). Therefore, these are separate primaries.
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.
Cancer Site Category:
Breast
Data Item Category:
Histology
Other Category:
Multiple primaries
Year:
2006
