Data Last Updated: May 31, 2024

Schema Discriminator 2: Histology Discriminator for 8020/3

This input is used for staging

Notes

**Note:** A schema discriminator is used to discriminate for histology 8020/3: Undifferentiated carcinoma to determine which AJCC Stage Group table to use. * **8020/3: Undifferentiated carcinoma with squamous component (see code 1)** Use the Squamous Cell Carcinoma AJCC Stage Group Table * **8020/3: Undifferentiated carcinoma with glandular component (see code 2)** Use the Adenocarcinoma AJCC Stage Group Table * **8020/3: Undifferentiated carcinoma, NOS (no mention of squamous or glandular component) (see code 3)** Use the Squamous Cell Carcinoma AJCC Stage Group Table
Code Description Schema ID #/Description
1 Undifferentiated carcinoma with squamous component 00161: Esophagus (including GE junction) Squamous
2 Undifferentiated carcinoma with glandular component 00169: Esophagus (including GE junction) (excluding Squamous)
9 Undifferentiated carcinoma, NOS 00161: Esophagus (including GE junction) Squamous
<BLANK> Histology is NOT 8020, Discriminator is not necessary