SEER Inquiry System - Question 20020012 Details

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Question 20020012

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Inquiry Details

References:

2007 SEER Manual, C-694. Appendix C

Question:

MP/H Rules/Histology--Breast: What code is used to represent the histology "ductal carcinoma in situ and invasive lobular carcinoma"? See discussion.

Discussion:

Is the histology coded to the combination code of 8522/3 (ductal and lobular) or to the invasive component 8520/3 (lobular)?

Answer:

For cases diagnosed 2007 or later:

Assuming ductal carcinoma in situ and invasive lobular carcinoma are present in a single tumor, code 8520/3 [Infiltrating lobular carcinoma, NOS].

Using the 2007 MP/H rules for breast, the single tumor invasive and in situ carcinoma module, start and stop at rule H9 and code the invasive histology.

History:

For cases diagnosed 2004 to 2006:

Code 8520/3 [Infiltrating lobular carcinoma, NOS]. Code the invasive histology according to rule 2 on page 86 of the 2004 SEER manual.

For cases diagnosed 1/1/01 to 12/31/03: Code the Histology field to 8522/3 [ductal carcinoma in situ and invasive lobular carcinoma] based on rule 1 of the Coding Complex Morphologic Diagnoses.

Coding Complex Morph Dx's, pg 3, Revised August 2002

SEER Program Code Man, 3rd Ed, pg 97, Rule 1

For cases diagnosed prior to 1/1/01: Code the Histology field to 8520/3 [lobular carcinoma], the invasive component, per rule 1 (Single lesion -- different behaviors) of the SEER Program Code Manual.

Cancer Site Category:

Breast

Data Item Category:

Histology

Other Category:

N/A

Year:

2002