SEER Inquiry System - Question 20021168 Details

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Produced: 04/03/2025 10:02 PM

Question 20021168

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Inquiry Details

References:

#1: ICD-O-3

#2: 2004 SEER Manual

Question:

Histology (Pre-2007)--Corpus Uteri: What code is used to represent the histology "endometrioid carcinoma with squamous differentiation" for an endometrium primary?

Discussion:

Answer:

For cases diagnosed 2004-2006:

Endometrioid adenocarcinoma with squamous differentiation is coded 8570 [Adenocarcinoma with squamous metaplasia].

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.

History:

Previous answer, not valid for cases diagnosed 2004 and later.

Reference: Coding Complex Morph Dx's, pg 7, Revised August 2002

Code the Histology field to 8323/3 [mixed cell adenocarcinoma].

GYN tumors containing two or more of the following tumor elements are coded to the mixed histology 8323:

1. Serous

2. Mucinous

3. Endometrioid

4. Clear cell

5. Transitional cell (Brenner)

6. Squamous cell.

Cancer Site Category:

Corpus uteri

Data Item Category:

Histology

Other Category:

N/A

Year:

2002