CS Extension

This input is used for staging

Notes

**Note 1**: Tumors of the body of the pancreas arise between the left edge of the superior mesenteric-portal vein confluence and the left edge of the aorta. Tumors of the tail of the pancreas arise to the left of the left edge of the aorta. **Note 2**: Islets of Langerhans are distributed throughout the pancreas; an islet tumor is coded according to the subsite of the pancreas in which the tumor arises if the information is available. **Note 3**: The assignment of T1 and T2 categories for tumors of the pancreas 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 150 and 200 as appropriate to code CS Extension based on a statement of T when no other extension information is available.

Default

999

NAACCR Item

NAACCR #2810

Code	Description	AJCC 7 T	AJCC 6 T	Summary Stage 1977 T	Summary Stage 2000 T
000	In situ, intraepithelial, noninvasive Pancreatic Intraepithelial Neoplasia III (PanInIII)	Tis	Tis	IS	IS
100	Confined to pancreas	Extension Size	Extension Size	L	L
150	Stated as T1 with no other information on extension	Extension Size	Extension Size	L	L
200	Stated as T2 with no other information on extension	Extension Size	Extension Size	L	L
300	Localized, NOS	Extension Size	Extension Size	L	L
400	Extension to peripancreatic tissue, NOS Fixation to adjacent structures, NOS	T3	T3	RE	RE
420	OBSOLETE DATA CONVERTED V0203 See code 595 Stated as T3, NOS	ERROR:	ERROR:	ERROR:	ERROR:
440	Duodenum	T3	T3	RE	RE
480	Ampulla of Vater Extrahepatic bile duct(s)	T3	T3	RE	RE
500	Spleen	T3	T3	RE	RE
560	Blood vessel(s): Hepatic artery Portal vein Splenic artery/vein Superior mesenteric vein Splenic flexure of colon	T3	T3	RE	RE
570	Kidney, NOS Left adrenal (suprarenal) gland Left kidney Left ureter	T3	T3	RE	D
580	Mesenteric fat Mesentery Mesocolon Peritoneum	T3	T3	RE	D
590	Retroperitoneal soft tissue (retroperitoneal space)	T3	T3	RE	D
595	Stated as T3 with no other information on extension	T3	T3	RE	RE
600	Tumor is inseparable from the celiac axis or superior mesenteric artery Aorta Celiac artery Superior mesenteric artery	T4	T4	RE	RE
620	Stomach	T4	T3	RE	RE
650	620 + (570, 580, or 590)	T4	T3	RE	D
670	600 + (570, 580, or 590)	T4	T4	RE	D
700	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 650, 670 [(600) or (620)] + [(570) or (580)]	T4	T4	RE	D
710	Ileum Jejunum	T4	T4	RE	D
730	Gallbladder Liver (including porta hepatis)	T4	T4	RE	D
750	OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 650, 670, 760 (590) + any of [(600) or (620) or (710) or (730)]	T4	T4	D	D
760	(710 or 730) + 590	T4	T4	RE	D
770	Colon (other than splenic flexure)	T4	T4	D	D
780	Diaphragm Right adrenal (suprarenal) gland Right kidney Right ureter	T4	T4	D	D
790	OBSOLETE DATA CONVERTED V0203 See code 810 Stated as T4, NOS	ERROR:	ERROR:	ERROR:	ERROR:
800	Further contiguous extension	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, 150, 200, and 300 ONLY, the T category for AJCC 7 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this schema. - For CS Extension codes 100, 150, 200, and 300 ONLY, the T category for AJCC 6 staging is assigned based on the value of CS Tumor Size, as shown in the Extension Size Table for this schema.