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Question: 20120054 Status
Final

References
Source 1:   Subject matter expert
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Notes:  
Source 2:   2007 MP/H Rules
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Notes:  


Question
Histology/Behavior--Brain and CNS: What is the histology and behavior code for a “giant cell astrocytoma”? See Discussion.



Discussion
The pathology report stated, “The giant cell astrocytoma should be considered at least grade 3.” There is not a code in the ICD-O-3 for giant cell astrocytoma, NOS; there are only codes for astrocytoma, NOS [9400/3] and subependymal giant cell astrocytoma [9384/1].



Answer
Code the morphology as giant cell glioblastoma [9441/3]. Glioblastoma and astrocytoma are both types of astrocytic tumors per the Brain and CNS Terms and Definitions, Chart 1, in the 2007 MP/H Rules Manual.



History


Last Updated
07/26/2013

Date Finalized
08/29/2012