Collaborative Stage Data Set - Revised 06/11/2013 FINAL

GISTPeritoneum

CS Extension

Note: The assignment of T categories for gastrointestinal stromal tumors (GIST) 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 350. 360, 370, and 380 as appropriate to code CS Extension based on a statement of T when no other extension information is available.

Code	Description	TNM 7 Map	TNM 6 Map	SS77 Map	SS2000 Map
100	Tumor confined to site of origin	^	*	L	L
300	Localized, NOS	^	*	L	L
350	Stated as T1 with no other information on extension	^	*	L	L
360	Stated as T2 with no other information on extension	^	*	L	L
370	Stated as T3 with no other information on extension	^	*	L	L
380	Stated as T4 with no other information on extension	^	*	L	L
400	Adjacent connective tissue	^	*	RE	RE
500	OBSOLETE DATA CONVERTED V0203 See code 360 Stated T2[NOS]	ERROR	ERROR	ERROR	ERROR
510	OBSOLETE DATA CONVERTED V0203 See code 370 Stated T3[NOS]	ERROR	ERROR	ERROR	ERROR
520	OBSOLETE DATA CONVERTED V0203 See Code 380 Stated T4[NOS]	ERROR	ERROR	ERROR	ERROR
600	Adjacent organs/structures including bone/cartilage: For retroperitoneum: Adrenal(s) (suprarenal gland(s)) Aorta Ascending colon Descending colon Kidney(s) Pancreas Inferior vena cava (IVC) Vertebra For peritoneum: Colon (except ascending and descending colon) Esophagus Gallbladder Liver Small intestine Spleen Stomach	^	*	RE	RE
800	Further contiguous extension, including: For retroperitoneum: Colon other than ascending or descending For peritoneum: Ascending colon Descending colon	^	*	D	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

^ For CS Extension codes 100-800 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.
* For CS Extension codes 100-800 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.