ICD-O-3.2. NAACCR, 2021 ICD O 3.2 Coding Table Excel (full list of ICD 3.2 histology codes)- 10/01/2020
Reportability/Behavior--Paraganglia: Is a 2021+ diagnosis of paraganglioma reportable if the grading of adrenal pheochromocytoma and paraganglioma (GAPP) score falls outside the stated requirements for malignancy? See Discussion.
Patient was diagnosed with a retroperitoneal paraganglioma on April 2021 mass resection. Final diagnosis included the comment:Based on the modified grading of adrenal pheochromocytoma and paraganglioma (GAPP), the GAPP score is 1. Scores greater than or equal to 3 are malignant.
We are aware that paraganglioma is classified as malignant for cases diagnosed in 2021+, however it is unclear how the pathologists interpretation of the GAPP score may affect the behavior of this case.
Report retroperitoneal paraganglioma based on ICD-O-3.2 histology/behavior that lists paraganglioma, NOS as 8680/3 for cases diagnosed 2021 and forward. While GAPP is a predictor of metastatic potential, it does not factor into behavior, thus reportability.