SEER Inquiry System - Question 20110059 Details

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Produced: 12/07/2025 2:47 PM

Question 20110059

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Inquiry Details

References:

#1: WHO Class Soft Tissue & Bone, 182-185. 5th ed, 2020

#2: ICD-O-3, 29

Question:

Histology: How do you code histology for "malignant myopericytoma"?

Discussion:

Answer:

Report malignant myopericytoma as 8824/3 for cases diagnosed 2021 and later.

History:

For cases diagnosed prior to 2021

According to the WHO Classification of Tumours of Soft Tissue and Bone, the histology code for myopericytoma is 8713/1. Malignant myopericytoma would be coded 8713/3 according to the ICD-O-3 matrix concept. The WHO classification states "Very rare malignant myopericytomas exist."

Cancer Site Category:

N/A

Data Item Category:

Histology

Other Category:

N/A

Year:

2011