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SEER Inquiry System - Report
Produced: 07/12/2025 3:27 AM
Question 20071038
Inquiry Details
References:
#1: 2007 MP/H Rules, 71. Brain & CNS
#2: 2007 SEER Manual, C-983
Question:
Discussion:
The terms and definitions for "Brain" in the 2007 MP/H rules distinguish between pPNET and PNET. Is it correct even when the diagnostic terminology alone would lead to other coding, such as "PNET" used to diagnose a soft tissue mass in the chest and "neuroectodermal tumor" used to diagnose a brain mass?
Should additional rules be added to both "Brain" and "Other Sites" to enforce this distinction?
Answer:
For cases diagnosed 2007 or later:
Yes. Assign code 9473/3 for tumors arising in the brain and spinal cord and assign code 9364/3 for tumors arising in the bone and soft tissue.
Clarification and reinforcement of this distinction will be added to the "Other sites" terms and definitions with the first revision to the MP/H rules.
