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SEER Inquiry System - Report
Produced: 02/09/2026 8:17 AM
Question 20230005
Inquiry Details
References:
2023 SEER Manual, 194. Radiation Treatment Modality
Question:
SEER Manual/First Course Treatment--Radiation Treatment Modality: How is Peptide Receptor Radionuclide Therapy (PRRT), a form of molecular therapy, coded when used to treat neuroendocrine tumors? See Discussion.
Discussion:
The 2023 SEER Manual indicates PRRT should be coded in the Other Therapy field per coding instruction 2.d. Likewise, SINQ 20180106 instructs to code PRRT as Other Therapy, while the discussion portion clearly outlines the radioactive nature of this modality.
Would PRRT be best coded as a radioisotope in the Radiation Treatment Modality--Phase I, II, III field rather than in the Other Therapy field?
Answer:
For cases diagnosed in 2023 and later, Update to the current manual: Assign code 13 (Radioisotopes, NOS) in Radiation Treatment Modality--Phase I, II, III for PRRT.
We will make this change in the next version of the SEER Manual.
