Collaborative Stage

Collaborative Stage for TNM 7 - Revised 05/19/2011 [ Schema ]

TongueBase

CS Extension

Note 1: The intrinsic muscles of tongue are four paired muscles within the tongue which control its shape. The extrinsic muscles originate from structures outside the tongue and control its positioning.
Note 2: The assignment of T1 and T2 categories for tumors of the oropharynx is based on tumor size. A physician's statement of the T category may be used to code CS Tumor Size and/or CS Extension if this is the only information in the medical record regarding one or both of these fields. However the two fields are coded independently: for example the record may document size but not extension, other than the physician's statement of the T category. Use codes 405, 410, 650, 775, 810, or 815 as appropriate to code CS Extension based on a statement of T when no other extension information is available.
Note 3: Use code 300 for localized tumor only if no information is available to assign codes 100, 200, 400, 405, or 410.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	In situ, intraepithelial, noninvasive	Tis	Tis	IS	IS
100	Invasive tumor on one side confined to posterior one-third of tongue: Lamina propria Submucosa	^	*	L	L
200	Musculature, intrinsic or NOS	^	*	L	L
300	Localized, NOS Midline tumor	^	*	L	L
400	Base of tongue tumor crosses midline Tumor of lingual tonsil on both sides	^	*	L	L
405	Stated as T1 with no other information on extension	^	*	L	L
410	Stated as T2 with no other information on extension	^	*	L	L
500	Anterior two-thirds of tongue for base of tongue Lingual tonsil for base of tongue Base of tongue for lingual tonsil Floor of mouth Lower gingiva	^	*	RE	RE
530	Sublingual gland	^	*	RE	RE
600	OBSOLETE DATA RETAINED V0200 Epiglottis, lingual surface assigned to T3 in AJCC 7, see code 640 Epiglottis, lingual (pharyngeal) surface Glossoepiglottic fold Glossopharyngeal fold Lateral pharyngeal wall Pharyngoepiglottic fold Tonsillar pillars and fossae Tonsils Vallecula	ERROR	*	RE	RE
610	Glossoepiglottic fold Glossopharyngeal fold Lateral pharyngeal wall Pharyngoepiglottic fold Tonsillar pillars and fossae Tonsils Vallecula	^	*	RE	RE
620	Soft palate, inferior surface or NOS including uvula	^	*	D	RE
640	Epiglottis, lingual surface	T3	*	RE	RE
645	640 + 620 Epiglottis, lingual surface plus soft palate	T3	*	D	RE
650	Stated as T3 with no other information on extension	T3	*	RE	RE
710	Mandible for lingual tonsil	T4a	T4a	RE	D
715	710 + 620 Mandible plus soft palate	T4a	T4a	D	D
720	Mandible for base of tongue	T4a	T4a	D	D
740	Medial pterygoid muscle Hard palate	T4a	T4a	D	D
750	Musculature of tongue, extrinsic: Genioglossus Geniohyoid Hyoglossus Mylohyoid Palatoglossus Styloglossus	T4a	T4a	D	D
760	Hypopharynx	T4a	T4a	D	D
770	Larynx	T4a	T4a	D	D
775	Stated as T4a with no other information on extension	T4a	T4a	RE	RE
780	Skin	T4b	T4b	D	D
790	Lateral nasopharynx Lateral pterygoid muscle Pterygoid plates	T4b	T4b	D	D
795	(770, 780, or 790) + 760	T4b	T4b	D	D
800	OBSOLETE DATA REVIEWED AND CHANGED V0203 Recode involved structures to 620, 645, 715, 760, 790, or 795 as appropriate. Contiguous extension to: Base of skull Carotid artery Hypopharynx Lateral nasopharynx Lateral pterygoid muscle Pterygoid plates Uvula	ERROR	ERROR	ERROR	ERROR
805	Further contiguous extension including: Skull base Carotid artery (encased)	T4b	T4b	D	D
810	Stated as T4b with no other information on extension	T4b	T4b	D	D
815	Stated as T4 [NOS] with no other information on extension	T4NOS	T4NOS	RE	RE
820	OBSOLETE DATA CONVERTED V0200 See code 805 Further contiguous extension	ERROR	ERROR	ERROR	ERROR
950	No evidence of primary tumor	T0	T0	U	U
999	Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record	TX	TX	U	U

^For CS Extension codes 100-620 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size AJCC 7 Table for this schema.
*For CS Extension codes 100-650 ONLY, the T category for AJCC 6 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size AJCC 6 Table for this schema.