SEER Inquiry System - Question 20081132 Details

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Question 20081132

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Inquiry Details

References:

2007 SEER Manual, C-695. Appendix C

Question:

MP/H Rules--Breast: What is the histology code for a breast tumor that is ductal ca with focal squamous differentiation? See Discussion.

Discussion:

SINQ 20021062 states for cases Dx'd prior to 2007, use 8570. Is 8570 also used when the squamous differentiation is focal?

Answer:

For cases diagnosed 2007 or later, use rule H14 and code the histology 8500 [duct carcinoma]. Ignore histologies described as "focal," "focus," or "foci." This instruction will be added to the histology rules in the upcoming revision of the MP/H manual.

Cancer Site Category:

Breast

Data Item Category:

N/A

Other Category:

N/A

Year:

2008