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SEER Inquiry System - Report
Produced: 10/31/2025 3:30 PM
Question 20021031
Inquiry Details
References:
ICD-O-3, 61
Question:
Primary Site--Meninges: Should the primary site for a meningioma of the right frontal lobe be coded to C71.1 or C70.0? See discussion.
Discussion:
In the opinion of some neurologists it is more important to capture the lobe in which the meningioma is located rather than code the primary site to meninges. Should a meningioma always be coded to meninges for primary site?
Answer:
Code the Primary Site field to C70.0 [cerebral meninges], the suggested site code for most meningiomas. Meningiomas arise from the meninges, not the brain (although they can invade brain). ICD-O-3 does not differentiate the specific location of the brain that the meninges cover. The information of interest to neurologists would have to be captured in an optional or user-defined field.
Cancer Site Category:
Brain and CNS
Data Item Category:
Primary site
Other Category:
N/A
Year:
2002
