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SEER Inquiry System - Report
Produced: 04/17/2026 9:00 AM
Question 20000450
Inquiry Details
References:
#1: SEER Book 4, 203, 204. Figures 30 &31
#2: ICD-O-3, 48
Question:
Primary Site--Esophagus: What is the difference between C15.5 [Lower third of esophagus] and C15.2 [Abdominal esophagus]?
Discussion:
Answer:
These descriptions represent the use of two different ways the esophagus can be divided anatomically. The two different systems used are illustrated in the SEER Self Instruction Manual for Tumor Registrars: Book 4. Assign the primary site code that describes the location of the tumor in the same way the tumor's location is described in the medical record.
Cancer Site Category:
Esophagus
Data Item Category:
Primary site
Other Category:
N/A
Year:
2000
