Collaborative Stage

Collaborative Stage for TNM 7 - Revised 11/09/2010 [ Schema ]

Nasopharynx

CS Extension

Note 1: Parapharyngeal involvement denotes postero-lateral infiltration of tumor beyond the pharyngobasilar fascia. The pharyngobasilar fascia is the fibrous layer of the pharyngeal wall between the mucosa and the muscular layer, attached superiorly to the basilar part of the occipital bone and diminishing in thickness as it descends.
Note 2: The masticator space primarily consists of the muscles of mastication, the medial and lateral pterygoid, masseter, and temporalis muscles. The space also includes the ramus of the mandible and the third division of cranial nerve V as it passes through the foramen ovale into the suprahyoid neck.
Note 3: Use code 300 for localized tumor ONLY if no information is available to assign codes 105 or 205.
Note 4: Use code 510, 585, 645, or 810 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, intraepithelial, noninvasive	Tis	Tis	IS	IS
100	OBSOLETE DATA RETAINED V0200 Invasive tumor confined to one of the following subsites: Inferior wall (superior surface of soft palate) One lateral wall Posterior superior wall (vault)	ERROR	T1	L	L
105	Invasive tumor confined to one of the following subsites: Inferior wall (superior surface of soft palate) One lateral wall Posterior superior wall (vault)	T1	T1	L	L
200	OBSOLETE DATA RETAINED V0200 Involvement of two or more subsites: Lateral wall extending into eustachian tube/middle ear Posterior, inferior, or lateral wall(s)	ERROR	T1	L	L
205	Involvement of two or more subsites: Lateral wall extending into eustachian tube/middle ear Posterior, inferior, or lateral wall(s)	T1	T1	L	L
300	OBSOLETE DATA RETAINED V0200 Confined to nasopharynx Localized, NOS	ERROR	T1	L	L
305	Confined to nasopharynx Localized, NOS	T1	T1	L	L
400	Oropharynx Soft palate, inferior surface including uvula WITHOUT parapharyngeal extension	T1	T2a	RE	RE
500	Nasal cavity WITHOUT parapharyngeal extension	T1	T2a	RE	RE
505	Extension to soft tissue, NOS (excluding soft tissue of neck)	T1	T2NOS	RE	RE
510	Stated as T1 with no other information on extension	T1	T1	L	L
520	OBSOLETE DATA CONVERTED V0203 See code 505 Extends to soft tissue NOS	ERROR	ERROR	ERROR	ERROR
550	OBSOLETE DATA RETAINED V0200 Any extension coded in 100-500 WITH fixation or tumor Described only as FIXED	ERROR	T4	RE	RE
555	Any extension coded in 100, 200, 400, 500, or 520 WITH fixation or tumor described only as FIXED	T2	T2b	RE	RE
560	OBSOLETE DATA RETAINED V0200 Any extension coded in 100-500 WITH parapharyngeal extension	ERROR	T2b	RE	RE
565	Any extension coded in in 105, 205, 350, 400, or 500 WITH parapharyngeal extension	T2	T2b	RE	RE
570	OBSOLETE DATA CONVERTED V0200 See code 610 Hard palate	ERROR	ERROR	ERROR	ERROR
580	OBSOLETE DATA RETAINED V0200 Pterygopalatine fossa	ERROR	T2b	RE	RE
585	Pterygopalatine fossa WITHOUT bone invasion	T2	T2b	RE	RE
590	Stated as T2 with no other information on extension	T2	T2b	RE	RE
600	OBSOLETE DATA RETAINED V0200 Bone, including skull	ERROR	T3	RE	RE
605	Bony structures of skull base Floor of orbit Cartilage, NOS Bone, NOS	T3	T3	RE	RE
610	Hard Palate	T3	T3	D	RE
620	Paranasal sinus	T3	T3	D	RE
645	Stated as T3 with no other information on extension	T3	T3	RE	RE
650	OBSOLETE DATA REVIEWED AND CHANGED V0200 In CSv1, extension to the orbit was included in both codes 650 and 700. In addition, the instructions for coding invasion of orbital bone were not clear. Codes 650 and 700 should be reviewed for orbital involvement. Involvement of bone of floor of orbit should be coded 605, and other orbit involvement should be coded 710. Orbit	ERROR	ERROR	ERROR	ERROR
700	OBSOLETE DATA REVIEWED AND CHANGED V0200 See note in code 650 Brain Cranial nerves Hypopharynx Infratemporal fossa Orbit Intracranial extension, NOS	ERROR	ERROR	ERROR	ERROR
710	Brain Cranial nerve involvement Intracranial extension, NOS Hypopharynx Infratemporal fossa/masticator space Orbit except bone of floor of orbit (see code 605)	T4	T4	D	D
750	OBSOLETE DATA CONVERTED V0200 See code 710 Masticator space	ERROR	ERROR	ERROR	ERROR
800	Further contiguous extension including: Soft tissues of neck	T4	T4	D	D
810	Stated as T4 with no other information on extension	T4	T4	RE	D
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