CS Extension

Notes

**Note 1**: The cystic duct extends from the neck of the gallbladder to its junction with the common hepatic duct, to form the common bile duct. **Note 2**: Involvement of one of the stated extrahepatic organs or structures is classified as T3, and involvement of more than one extrahepatic structure is classified as T4. **Note 3**: Involvement within the porta hepatis is coded according to the structures involved: portal vein, common hepatic artery, and common hepatic duct.
Code Description AJCC 7 T AJCC 6 T Summary Stage 1977 T Summary Stage 2000 T
000 In situ, intraepithelial, noninvasive Tis Tis IS IS
100 Invasive tumor confined to:
Lamina propria
Mucosa, NOS
Submucosa (superficial invasion)
T1a T1 L L
105 Extension to tissues in code 100 plus any involvement of gallbladder T1a T3 RE RE
110 Stated as T1a with no other information on extension T1a T1 L L
200 Muscularis propria T1b T1 L L
205 Extension to tissues in code 200 plus any involvement of gallbladder T1b T3 RE RE
210 Stated as T1b with no other information on extension T1b T1 L L
220 Stated as T1 [NOS] with no other information on extension T1NOS T1 L L
300 Localized, NOS T1NOS T1 L L
400 Beyond wall of cystic duct
Periductal/fibromuscular connective tissue
T2 T2 RE RE
405 Extension to tissues in code 400 plus any involvement of gallbladder T2 T3 RE RE
410 Stated as T2 with no other information on extension T2 T2 RE RE
420 Extension to extrahepatic bile ducts (including common hepatic duct) (beyond cystic duct) T3 T1 L L
430 420 + 400

Extension to extrahepatic bile ducts (including common hepatic duct) (beyond cystic duct) plus extension beyond wall of cystic duct
T3 T2 RE RE
550 Serosa (visceral peritoneum) perforated T3 T3 RE RE
600 OBSOLETE DATA RETAINED V0200

Gallbladder
Liver, porta hepatis
Pancreas
ERROR: T3 RE RE
610 OBSOLETE DATA RETAINED AND REVIEWED V0203
See code 628 and 720

Unilateral branches of portal vein (right or left)
Unilateral branches of hepatic artery (right or left)
T3 T3 RE RE
620 OBSOLETE DATA REVIEWED V0203
See codes 420, 430, 625, 626, 790

Liver/porta hepatis
T3 T3 RE RE
625 Liver T3 T3 RE RE
626 625 +420

Extension to liver plus extrahepatic bile ducts (including common hepatic duct) (beyond cystic duct)
T3 T3 RE RE
628 Extension to ONE of the following with or without extension to liver:
Unilateral branches of hepatic artery (right or left)
Unilateral branches of portal vein (right or left)
T3 T3 RE RE
630 OBSOLETE DATA REVIEWED V0203
See codes 105, 205, 405, and 635

Extension to ONE of the following WITH or WITHOUT extension to liver:
Gallbladder
Pancreas
T3 T3 RE RE
635 Extension to pancreas with or without extension to liver T3 T3 RE RE
650 OBSOLETE DATA RETAINED V0200
See code 651

Extension to ONE of the following WITHOUT extension to any structure in 630,
WITH OR WITHOUT extension to liver, (620):
Colon , NOS
Transverse including flexure
Duodenum , NOS
Omentum, NOS
Lesser
Stomach , distal
ERROR: T4 RE RE
651 OBSOLETE DATA CONVERTED V0203
See code 652

Extension to ONE of the following WITHOUT extension to any structure in 630, WITH OR WITHOUT extension to liver, (620):
Colon, NOS
Transverse including flexure
Duodenum, NOS
Omentum, NOS
Lesser
Stomach, distal
ERROR: ERROR: ERROR: ERROR:
652 Extension to ONE of the following WITHOUT extension to any structure in 635, with or without extension to liver:
Colon, NOS:
Transverse including flexure
Duodenum, NOS
Omentum, NOS:
Lesser
Stomach, distal
T3 T4 RE RE
655 OBSOLETE DATA REVIEWED V0203
See codes 105, 205, 405, and 635

Extension to gallbladder AND pancreas 630
WITHOUT extension to any structure in code 651,
WITH or WITHOUT extension to liver (620)
T3 T3 RE RE
660 OBSOLETE DATA RETAINED V0200
See code 790

Main portal vein or its branches bilaterally
Common hepatic artery
Hepatic artery, NOS
Portal vein, NOS
ERROR: T4 RE RE
670 OBSOLETE DATA CONVERTED V0203
See code 730

Extension to MORE THAN ONE structure in code 651
OR
Extension to one or more structure in code 651 PLUS one or more structures in code 630
WITH OR WITHOUT extension to liver (620)
ERROR: ERROR: ERROR: ERROR:
700 OBSOLETE DATA CONVERTED V0203
See code 701

Extension to ONE of the following
WITHOUT extension to any structure in codes 630 or 651,
WITH OR WITHOUT extension to liver:
Other parts of colon
Greater omentum
Stomach, proximal
ERROR: ERROR: ERROR: ERROR:
701 Extension to ONE of the following without extension to any structure in code 420, 628, 635, or 652:
Other parts of colon
Greater omentum
Stomach, proximal
T3 T4 D RE
705 Stated as T3 with no other information on extension T3 T3 RE RE
710 OBSOLETE DATA CONVERTED V0203
See code 740

Extension to MORE THAN ONE structure in code 700
OR
Extension to one or more structures in code 700 PLUS one or more structures in codes 630 or 651
WITH OR WITHOUT extension to liver
ERROR: ERROR: ERROR: ERROR:
720 Extension to MORE THAN ONE structure in codes 420, 628, and 635
WITHOUT extension to any structure in code 652 or 701 with or without extension to liver
T4 T3 RE RE
730 Extension to MORE THAN ONE structure in code 652
OR
Extension to one or more structures in code 652 PLUS one or more structures in code 420, 628, or 635
with or without extension to liver
T4 T4 RE RE
740 Extension to MORE THAN ONE structure in code 701
OR
Extension to one or more structures in code 701 PLUS one or more structures in code 420, 628, 635, or 652 with or without extension to liver
T4 T4 D RE
750 OBSOLETE DATA RETAINED V0200
See code 795

Abdominal wall
ERROR: T4 D D
790 Main portal vein or its branches bilaterally
Common hepatic artery
Hepatic artery, NOS
Portal vein, NOS
T4 T4 RE RE
792 790 + 701

Involvement of any structure in code 790 plus any structure in code 701
T4 T4 D RE
795 Abdominal wall T4 T4 D D
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