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SEER Inquiry System - Report
Produced: 11/26/2024 9:39 PM
Question 20200083
Inquiry Details
References:
#1: ICD-O-3.2
#2: NAACCR Implementation Guidelines, 16. NAACCR
Question:
Reportability/Histology--Kidney: Is hybrid oncocytic chromophobe tumor reportable for cases diagnosed 2021 and later? If so, how is the histology coded? See Discussion.
Discussion:
The ICD-O-3.2 Coding Table includes hybrid oncocytic chromophobe tumor as a related term for histology code 8317 (Renal cell carcinoma, chromophobe type). However, this related term is not discussed in the implementation guidelines as being a new term/reportable tumor. The Solid Tumor Rules do not indicate a hybrid oncocytic chromophobe tumor is reportable; however, if a registrar only looked at the ICD-O-3.2 Coding Table, it may seem as though this histology should be collected.
The term hybrid oncocytic chromophobe tumor was not included in the Solid Tumor Rules as a subtype/variant of RCC, or as an equivalent term for chromophobe RCC. There is a SINQ (20180047) that states not to report renal hybrid oncocytic tumor, despite the fact these tumors exhibit mixed features of both oncocytoma and chromophobe RCC. For cases diagnosed 2021 and later, should the clarification in the SINQ apply? Or should the ICD-O-3.2 Coding Table be used which indicates this is a reportable diagnosis? If the standard setters decided not to implement use of hybrid oncocytic chromophobe tumor for 2021, can clarification be added to the Solid Tumor Rules or Implementation Guidelines?
This question was prompted from preparing SEER*Educate coding exercises. We will use the answer as a reference in the rationales.
Answer:
Hybrid oncocytic chromophobe tumor is listed in ICD-O-3.2 as 8317/3 which indicates it is reportable if diagnosed in 2021 or later. For cases diagnosed 1/1/2021 and later, use ICD-O-3.2 for reportability. See page 16 of the NAACCR 2021 Implementation Guidelines.
Between publication of ICD-O-3.2 and updates made to solid tumor histology tables, additional terms were added based on review by the IARC ICD-O committee. These changes were not made available in time to correct the tables. All related terms or synonyms may not be included in the histology tables and ICD-O-3.2 should be used in tandem with the solid tumor rules.
