Data Last Updated: Sept. 13, 2023

Schema Discriminator 1: Thyroid Gland/Thyroglossal Duct

This input is used for staging


**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
1 Thyroid gland
Thyroid, NOS
2 Thyroglossal duct cyst