An official website of the United States government
Home
SEER Inquiry System - Report
Produced: 11/26/2024 5:17 PM
Question 20190090
Inquiry Details
References:
#1: 2018 EOD Manual. v1.7
#2: 2018 Summary Stage. v1.7
Question:
Update to current manual/Extent of Disease/Summary Stage 2018--Fallopian Tube: How are behavior, EOD Primary Tumor, and Summary Stage 2018 coded for a diagnosis of serous tubal intraepithelial carcinoma (STIC) of the fallopian tube? See Discussion.
Discussion:
The 2018 ICD-O-3 Histology Updates table lists serous tubal intraepithelial carcinoma (C57.0) with a behavior code of 2.
The EOD Primary Tumor schema for Fallopian Tube shows STIC has an extension code of 100. It also maps code 100 to Summary Stage 2018 L (localized).
Summary Stage 2018 for fallopian tube only documents that intraepithelial tumors are summary stage 0 (in situ).
Answer:
We are aware of the issue and have been in discussion with standard setters (SEER, NPCR, AJCC, and NAACCR). At this time, we recommend coding:
Histology: 8441/2
Extent of Disease (EOD) Primary Tumor: 000
Summary Stage: 0
AJCC Clin/Path T would be 88, since all in situ lesions are not applicable.
Edits will not allow you to have a 8441/2 with a T1. Also, EOD is not currently set up to derive the correct T value, unless you code 100.
The change to address the issue will take effect in 2021.
