Collaborative Stage

Collaborative Stage for TNM 7 - Revised 10/23/2009 [ Schema ]

GumLower

CS Extension

Note 1: Superficial erosion alone of bone/tooth socket by gingival primary is not sufficient to code as bone involvement (code 700).
Note 2: Periosteum is a fibrous membrane that wraps the outer surface of bones. Mucoperiosteum is a compound structure of mucous membrane and periosteum. Cortical bone is the dense compact outer layer of bone. Trabecular, cancellous, or spongy bone (spongiosa) is a porous network of tissue filling the interior of bone, decreasing weight and allowing room for blood vessels and marrow.
Note 3: AJCC assigns T value based on size for involvement of cortical bone. Involvement through cortical bone is required for assignment of T4a.
Note 4: Use code 300 for localized tumor ONLY if no information is available to assign codes 100, 405, 410, or 415.
Note 5: Use code 405, 410, 415, 775, 810, or 815 if the physician's assignment of T category is the ONLY information available about the extent of the tumor.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	In situ; noninvasive; intraepithelial	Tis	Tis	IS	IS
100	Invasive tumor confined to lamina propria (mucoperiosteum) (stroma)	^	*	L	L
300	Localized, NOS	^	*	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
415	Stated as T3 with no other information on extension	^	*	L	L
500	Buccal mucosa (inner cheek) Floor of mouth Labial mucosa (inner lip), lower lip Labial mucosa (inner lip), lip NOS Tongue mucosa (Note: Mucosa upper lip moved to code 780)	^	*	RE	RE
535	Cortical bone of mandible Mandible, NOS Cortical bone, NOS Bone, NOS	^	*	RE	RE
550	Facial muscle, NOS Subcutaneous soft tissue of face	^	*	RE	RE
600	Lateral pharyngeal wall Tonsillar pillars and fossae Tonsils	^	*	RE	RE
650	Soft palate including uvula	^	*	RE	RE
700	OBSOLETE DATA RETAINED V0200 Mandible	ERROR	T4a	RE	RE
720	Deep (extrinsic) muscle of tongue: Genioglossus Hyoglossus Palatoglossus Styloglossus	T4a	T4a	RE	RE
725	Trabecular bone of mandible	T4a	T4a	RE	RE
760	Skin of face	T4a	T4a	D	D
770	Bone of maxilla Maxilla, NOS	T4a	T4a	D	D
775	Stated as T4a with no other information on extension	T4a	T4a	RE	RE
780	Labial mucosa (inner lip), upper lip	T4b	T4b	D	D
785	780 + (760 or 770) (Mucosa upper lip + Any structure in code 760 or 770)	T4b	T4b	D	D
788	Specified bone (other than mandible, maxilla, and bones in codes 795 and 805)	T4b	T4b	D	D
790	OBSOLETE DATA CONVERTED V0200 See code 805 Skull	ERROR	ERROR	ERROR	ERROR
795	Masticator space Pterygoid plates	T4b	T4b	D	D
800	OBSOLETE DATA RETAINED V0200 Further contiguous extension, including: Masticator space Pterygoid plates Skull base Encases internal carotid artery	ERROR	T4b	D	D
805	Further contiguous extension, including: Skull Skull base Internal 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	D	D
950	No evidence of primary tumor	T0	T0	U	U
999	Unknown extension Primary tumor cannot be assessed Not documented in patient record	TX	TX	U	U

^ For codes 100 through 650 ONLY, the T category is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this site.
* For codes 100 through 650 ONLY, the T category is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this site.