Organization

Field Name

ID

Required

KCR

EOD Schema Discriminator 1

30122

 

SEER

Schema Discriminator 1

3926

 

Note A schema discriminator is used to discriminate between thyroid gland and thyroglossal duct tumors with primary site code C739 Thyroid Gland. Code the site in which the tumor arose.

  • Thyroid gland (see code 1)
    Subsites include Thyroid, NOS
  • Thyroglossal duct (see code 2)

Code

Description

Disease

1

Thyroid gland
Thyroid, NOS

Eligible for AJCC staging

  • 73.1: Thyroid: Differentiated
  • 73.2: Thyroid: Anaplastic
  • 74: Thyroid: Medullary

2

Thyroglossal duct cyst

NOT eligible for AJCC staging