CS Extension (Supraglottic Larynx)

Code	Description	TNM Map	SS77 Map	SS2000 Map
00	In situ; noninvasive; intraepithelial	Tis	IS	IS
10	Invasive tumor with normal vocal cord mobility confined to: Supraglottis (one subsite): Aryepiglottic fold Arytenoid cartilage Corniculate cartilage Cuneiform cartilage Epilarynx, NOS False cords Ventricular bands Ventricular cavity Ventricular fold Infrahyoid epiglottis Laryngeal cartilage, NOS Laryngeal (posterior) surface of epiglottis Suprahyoid epiglottis (including tip, lingual {anterior} and laryngeal surfaces)	T1	L	L
20	Tumor involves more than one subsite of supraglottis WITHOUT fixation or NOS	T2	L	L
30	Tumor involves adjacent regions(s) of larynx	T2	L	L
35	Impaired vocal cord mobility	T2	L	L
40	Tumor limited to larynx WITH vocal cord fixation	T3	L	L
45	Localized, NOS	T1	L	L
52	Paraglottic space	T3	RE	RE
60	Tumor involves region outside the supraglottis WITHOUT fixation, including: Medial wall of pyriform sinus Mucosa of base of tongue Vallecula	T2	RE	RE
62	Code 60 WITH fixation	T3	RE	RE
65	Hypopharynx, NOS Postcricoid area Pre-epiglottic tissues	T3	RE	RE
66	Deep base of tongue	T3	RE	RE
67	Cricoid cartilage	T3	RE	RE
68	Minor thyroid cartilage erosion (e.g., inner cortex)	T3	RE	D
70	Extension to/through: Esophagus Oropharynx Soft tissues of neck Thyroid cartilage (except minor erosion, see code 68) Thyroid gland	T4a	D	D
72	Extension to/through: Extrinsic (strap) muscle(s) Omohyoid Sternohyoid Sternothyroid Thyrohyoid Skin	T4a	D	D
73	Extension to/through: Deep extrinsic muscle of tongue Trachea	T4a	D	D
80	Further contiguous extension, including: Mediastinal structures Prevertebral space Tumor encases carotid artery	T4b	D	D
95	No evidence of primary tumor	T0	U	U
99	Unknown extension Primary tumor cannot be assessed Not documented in patient record	TX	U	U