Collaborative Stage

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

CS Extension

Note 1: AJCC does not include a Tis category for Neuroendocrine Tumors (NET) of the ampulla of Vater. Extension code 000 is mapped to TX for AJCC stage and in situ Summary Stage.
Note 2: The assignment of the T1 and T2 categories for NETs of ampulla of Vater is based on tumor size. A physician's statement of the T 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, 430, 600, 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 for localized tumor only if no information is available to assign code 100 or 430.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
000	In situ, intraepithelial, noninvasive	TX	Tis	IS	IS
100	Invasive tumor confined/limited to ampulla of Vater or extending to sphincter of Oddi	^	T1	L	L
300	Localized, NOS	^	T1	L	L
310	Stated as T1 with no other information on extension	^	T1	RE	RE
420	Duodenal wall	^	T2	RE	RE
430	Stated as T2 with no other information on extension	^	T1	L	L
520	Pancreas	T3	T3	RE	RE
550	Retroperitoneum Peripancreatic soft tissues	T3	T3	D	D
600	Stated as T3 with no other information on extension	T3	T3	RE	RE
610	Visceral peritoneum (serosa)	T4	T4	RE	RE
620	Common bile duct	T4	T4	RE	RE
650	Extrahepatic bile ducts other than common bile duct or sphincter of Oddi	T4	T4	RE	RE
700	Extension to other adjacent organs or tissues: Blood vessels (major): Hepatic artery Portal vein Gallbladder Hepatic flexure Lesser omentum Liver including porta hepatis Stomach, NOS: Distal Transverse colon	T4	T4	RE	RE
750	Stomach, proximal	T4	T4	RE	D
760	(620 to 750) + 550	T4	T4	D	D
780	OBSOLETE DATA CONVERTED V0203 See code 810 Stated as T4, NOS	ERROR	ERROR	ERROR	ERROR
800	Further contiguous extension: Other adjacent organs	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 Primary tumor cannot be assessed Not documented in patient record	TX	TX	U	U

^ For CS Extension codes 100-430 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.