CS Extension

Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, non invasive NA Tis IS IS
100 Invasive tumor confined to:
Lamina propria
Mucosa, NOS
Submucosa (superficial invasion)
NA T1 L L
200 Muscularis propria NA T1 L L
300 Localized, NOS
Tumor confined to bile duct
NA T1 L L
400 Perimuscular connective tissue
Tumor invades beyond the wall of the bile duct
NA T2 RE RE
500 Invasion of/through serosa NA T2 L RE
550 500 + 400 NA T2 RE RE
600 Extension into liver, NOS NA T3 RE RE
610 Extension into liver less than or equal to 2 cm NA T3 RE RE
620 Extension to ONE of the following:
Ampulla of Vater
Omentum, NOS
Greater
Lesser
Pancreas
Small intestine, NOS
NA T3 RE RE
630 Gallbladder
Unilateral branches of the right or left hepatic artery
Unilateral branches of the right or left portal vein
NA T3 RE RE
640 Extension into liver greater than 2 cm
OR
Extension to two or more adjacent organs listed in codes 600 - 630
NA T3 D D
645 Duodenum NA T4 RE RE
647 645 + 640 NA T4 D D
650 Extension to ONE of the following:
Colon
Stomach
NA T4 D D
660 OBSOLETE DATA RETAINED AND REVIEWED V0203
See codes 645, 647, 670, and 675

Abdominal wall
Duodenum
NA T4 RE RE
670 Abdominal wall NA T4 D D
675 670 + 640 NA T4 D D
700 OBSOLETE DATA RETAINED AND REVIEWED V0203
See code 640 and 675

Extension into liver greater than 2 cm
Extension to two or more adjacent organs listed in codes 600 - 630
NA T3 D D
710 Extension to two or more adjacent organs listed in codes 645, 650, and 670 NA T4 D D
750 Common hepatic artery
Cystic artery/vein
Hepatic artery, NOS
Portal vein or its branches bilaterally
Portal vein, NOS
NA T4 RE D
760 750 + (640, 645, 650, 670)

Involvement of structures in code 750 plus involvement of one or more structures in codes 640 645, 650, or 670
NA T4 D D
800 Further contiguous extension NA T4 D D
950 No evidence of primary tumor NA T0 U U
999 Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in patient record
NA TX U U