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 |