SEER Inquiry System - Question 20021175 Details

System Guide

Back to Search Results

SEER Inquiry System - Report

Produced: 09/09/2025 5:48 AM

Question 20021175

Export CSV Export PDF Print

Add to Report

Inquiry Details

References:

ICD-O-3

Question:

Histology (Pre-2007): What code is used to represent the histology if the final diagnosis between an electron microscopy report and the immunocytochemistry (ICC) differs and both histologies are specific (e.g., one report states papillary carcinoma and the other states squamous cell carcinoma)?

Discussion:

Answer:

For tumors diagnosed prior to 2007:

There is no established hierarchy between electron microscopy and ICC findings. Contact the pathologists involved in these types of cases to determine the final histologic diagnosis.

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:

N/A

Data Item Category:

Histology

Other Category:

N/A

Year:

2002