Collaborative Stage

Collaborative Stage for TNM 7 - Revised 11/03/2010 [ Schema ]

CS Extension

Note 1: AJCC 7th Edition T1 and T2 categories are based on size and high risk features and not depth of invasion or extension. AJCC 7th Edition does not include a T3 category for scrotum.
Note 2: The assignment of the T1 category for cutaneous squamous cell carcinomas with one or no high-risk features is based on tumor size. A physician's statement of the T1 category may be used to code both 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. Use codes 310, 320, and 810 as appropriate to code CS Extension based on a statement of T when no other extension information is available.
Note 3: Use code 300 (Localized, NOS) when no further information is available to assign code 100, 305, 310, or 320.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	In situ, intraepidermal, intraepithelial, noninvasive Bowen disease	Tis	Tis	IS	IS
100	Confined to scrotum	^	*	L	L
300	Localized, NOS	^	*	L	L
305	Subcutaneous tissue	^	*	L	L
310	Stated as T1 with no other information on extension	^	*	L	L
320	Stated as T2 with no other information on extension	T2	T2	L	L
400	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 450 and 500 Adjacent connective tissue (See definition of connective tissue in General Rules, Part I)	^	*	RE	RE
450	Adjacent connective tissue excluding skeletal muscle	^	*	RE	RE
500	Skeletal muscle	^	T4	RE	RE
600	Adjacent organs/structures: Male genital organs: Epididymis Penis Prostate Spermatic cord Testis	^	T4	RE	RE
650	Underlying cartilage	^	T4	D	D
800	Further contiguous extension: Other organs and structures in male pelvis: Bladder Rectum Urethra	^	T4	D	D
805	Bone: Axial or appendicular skeleton	T4	T4	D	D
810	Stated as T4 with no other information on extension	T4	T4	RE	RE
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 100-310 and 400-800 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size and CS Site-Specific Factor 12, High Risk Features, as shown in the Extension Size High Risk Table for this schema.
* For CS Extension codes 100-310, 400, and 450 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.