Schema Discriminator 1: Thyroid Gland/Thyroglossal Duct

This input is used for staging

Notes

**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)**

Default

1

NAACCR Item

NAACCR #3926

Metadata

SSDI
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