SEER Inquiry System - Question 20041023 Details

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Produced: 04/06/2025 8:23 PM

Question 20041023

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Inquiry Details

References:

#1: ICD-O-3

#2: 2004 SEER Manual, 86

Question:

Histology (Pre-2007)--Lung: Should "moderately differentiated adenocarcinoma of scar type, intermixed with bronchiolo-alveolar carcinoma" be coded to 8250 [bronchiolo-alveolar adenocarcinoma, NOS] or 8255 [adenocarcinoma of mixed subtypes]?

Discussion:

Answer:

For tumors diagnosed prior to 2007:

Code Histology to 8255 [Adenocarcinoma with mixed subtypes]. This is a single tumor containing both a scar carcinoma and a bronchiolo-alveolar carcinoma--use 8255. The synonym for 8255 is adenocarcinoma combined with other types of carcinoma (not just subtypes).

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:

Lung

Data Item Category:

Histology

Other Category:

N/A

Year:

2004