CS Extension
This input is used for staging
Notes
**Note**: Ignore extension from gallbladder to cystic duct. Ignore extension to extrahepatic bile ducts or ampulla of Vater (code 618) when other structures are involved with a code higher than 618.Default
999NAACCR Item
NAACCR #2810| 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 | T1a | L | L |
| 110 | Stated as T1a with no other information on extension | T1a | T1a | L | L |
| 200 | Muscularis propria | T1b | T1b | L | L |
| 210 | Stated as T1b with no other information on extension | T1b | T1b | L | L |
| 300 | Localized, NOS | T1NOS | T1NOS | L | L |
| 350 | Stated as T1 [NOS] with no other information on extension | T1NOS | T1NOS | L | L |
| 400 | Perimuscular connective tissue | T2 | T2 | L | RE |
| 410 | Stated as T2 with no other information on extension | T2 | T2 | RE | RE |
| 500 | Invasion of/through serosa (visceral peritoneum) | T3 | T3 | L | RE |
| 550 | 500 + 400 | T3 | T3 | L | RE |
| 600 | Extension into liver, NOS | T3 | T3 | RE | RE |
| 610 | Extension into liver less than or equal to 2 cm | T3 | T3 | RE | RE |
| 615 | Extension to branch(es) of portal vein (right or left) Extension to branch(es) of hepatic artery (right or left) but not into main portal vein or hepatic artery |
T3 | T3 | RE | RE |
| 618 | Extension to: Ampulla of Vater Extrahepatic bile duct(s) |
T3 | T3 | RE | RE |
| 620 | OBSOLETE DATA RETAINED V0200 (See codes 618 and 621) Extension to ONE of the following: Ampulla of Vater Duodenum Extrahepatic bile duct(s) Omentum, NOS Greater Lesser Pancreas Small intestine, NOS |
ERROR: | T3 | RE | RE |
| 621 | Extension to ONE of the following: Duodenum Omentum, NOS: Greater Lesser Pancreas Small intestine, NOS |
T3 | T3 | RE | RE |
| 630 | Extension to cystic artery/vein WITHOUT extension to any structure in code 621 |
T3 | T3 | RE | D |
| 650 | Extension to ONE of the following WITHOUT extension to any structure in codes 621-630: Colon Stomach |
T3 | T3 | D | D |
| 655 | Extension to abdominal wall WITHOUT extension to any structures in codes 621-650 |
T3 | T4 | D | D |
| 657 | Extension to diaphragm WITHOUT extension to any structures in codes 621-650 |
T3 | T4 | D | D |
| 660 | OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 630 and 730 Extension to cystic artery/vein WITHOUT extension to any structure in 621 to 650 |
T3 | T3 | RE | D |
| 670 | OBSOLETE DATA RETAINED AND REVIEWED V0203 See codes 673, 685 Extension to ONE structure in codes 621 to 650 PLUS extension into liver (600 or 610) |
T3 | T3 | RE | RE |
| 673 | Extension to one structure in code 621 PLUS extension into liver 2 cm or less or NOS |
T3 | T3 | RE | RE |
| 680 | Extension to cystic artery/vein, code 630 PLUS extension into liver 2 cm or less or NOS | T3 | T3 | RE | D |
| 685 | Extension to ONE structure in code 650-657 PLUS extension into liver 2 cm or less or NOS | T3 | T3 | D | D |
| 710 | Extension into liver greater than 2 cm WITHOUT extension to any structure in codes 621-657 |
T3 | T3 | D | D |
| 720 | Extension to ONE structure in codes 621-657 PLUS extension into liver greater than 2 cm | T3 | T3 | D | D |
| 725 | Stated as T3 with no other information on extension | T3 | T3 | RE | RE |
| 730 | Extension to two or more structures in codes 621-657 with or without extension into liver of any depth |
T4 | T4 | D | D |
| 750 | Extension to: Common hepatic artery Main portal vein Hepatic artery, NOS Portal vein, NOS |
T4 | T4 | RE | D |
| 780 | 750 + any of (600 to 730) | T4 | T4 | D | D |
| 800 | OBSOLETE DATA RETAINED V0200 See codes 655 and 805 Further contiguous extension, including: Abdominal wall Diaphragm |
ERROR: | T4 | D | D |
| 805 | OBSOLETE DATA REVIEWED V0203 See codes 657, 685, 720, 730, 808 Further contiguous extension, including: Diaphragm |
T4 | T4 | D | D |
| 808 | Further contiguous extension | T4 | T4 | D | D |
| 810 | Stated as T4 with no other information on extension | T4 | T4 | RE | 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 |