CS Lymph Nodes: Thyroid Gland

Note 1: Code only regional nodes and nodes, NOS, in this field.Distant nodes are coded in the field Mets at DX.

Note 2: This field includes all lymph nodes defined as Levels I-VI and Other by AJCC.The complete definitions are provided in the General Instructions for head and neck cancers.

Note 3: Codes 12-15 include ipsilateral, bilateral, contralateral, and midline lymph nodes.

Code	Description	TNM	SS77	SS2000
00	None; No regional lymph node involvement	N0	NONE	NONE
10	OBSOLETE - Ipsilateral regional lymph nodes. Review and recode in 12-15	N1a	RN	RN
11	OBSOLETE - Regional lymph nodes. Review and recode in 12-15	N1b	D	RN
12	Level VI nodes (central compartment of the neck) Anterior deep cervical Laterotracheal Paralaryngeal Paratracheal Prelaryngeal/Delphian Pretracheal Recurrent laryngeal Stated as N1a, NOS	N1a	RN	RN
13	Cervical nodes (other than those in central compartment). Levels I-III and Levels IV-V (except supraclavicular nodes, see code 14) Level I node Submandibular (submaxillary) Submental Level II node Jugulodigastric (subdigastric) Upper deep cervical Upper jugular Level III node Middle deep cervical Mid jugular Level IV node Jugulo-omohyoid (supraomohyoid) Lower deep cervical Lower jugular Level V node Posterior cervical Posterior triangle (spinal accessory and transverse cervical) Other Groups Parapharyngeal Retropharyngeal Sub-occipital Cervical, NOS Deep cervical, NOS Internal jugular, NOS Mandibular, NOS Stated as N1b, NOS	N1b	RN	RN
14	Supraclavicular nodes (transverse cervical)	N1b	D	RN
15	Level VII node Posterior mediastinal (tracheoesophageal) Superior mediastinal nodes Upper anterior mediastinal nodes Upper mediastinal nodes Mediastinal, NOS	N1b	D	RN
20	OBSOLETE - Bilateral/contralateral regional lymph nodes. Review and recode in 12-15	N1a	RN	RN
21	OBSOLETE - Bilateral/contralateral regional lymph nodes. Review and recode in 12-15.	N1b	D	RN
30	OBSOLETE - Mediastinal nodes. Review and recode in 15.	N1b	D	RN
31	OBSOLETE - Mediastinal nodes Review and recode in 15.	N1b	D	RN
50	Regional lymph node(s), NOS	N1NOS	RN	RN
80	Lymph nodes, NOS	N1NOS	RN	RN
99	Unknown; not stated Regional lymph node(s) cannot be assessed Not documented in patient record	NX	U	U

* For codes 10, 12, 20, 22, 30, 32, 40, 42, 49, 50, 52 and 80 ONLY, the N category is assigned based on the value of Site-Specific Factor 1, Size of Lymph Nodes, using the extra table, Lymph Nodes Size Table for this site.