SEER Inquiry System - Question 20260023 Details

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Produced: 10/29/2026 4:51 PM

Question 20260023

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Inquiry Details

References:

SEER Manual, 246-248. 2026, Other Therapy

Question:

SEER Manual/First Course Treatment/Other Therapy--Breast: How is the agent endoxifen coded when given to treat hormone sensitive breast cancer? This agent is not listed in SEER*Rx.

Discussion:

Answer:

Code as Other Therapy, code 2 (other-experimental). Endoxifen is currently in phase 2 studies and not FDA approved standard treatment at present.

Cancer Site Category:

Breast

Data Item Category:

First course treatment, Other therapy

Other Category:

First Course of Therapy

Year:

2026