CS Extension
Notes
**Note**: High-grade dysplasia is generally not reportable in cancer registries, but, if a registry does collect this, code 000 should be used.| 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/limited to ampulla of Vater Invasive tumor extending to sphincter of Oddi |
T1 | T1 | L | L |
| 300 | Localized, NOS Stated as T1 with no other information on extension |
T1 | T1 | L | L |
| 420 | Duodenal wall Stated as T2 with no other information on extension |
T2 | T2 | RE | RE |
| 520 | Pancreas Stated as T3 with no other information on extension |
T3 | T3 | RE | RE |
| 620 | Common bile duct | T4 | T4 | RE | RE |
| 650 | Extrahepatic bile duct(s) (Other than common bile duct and sphincter of Oddi) |
T4 | T4 | RE | RE |
| 700 | OBSOLETE DATA RETAINED AND REVIEWED V0203 See code 710 and 760 Extension to other adjacent organs or tissues: Blood vessel(s) (major): Hepatic artery Portal vein Gallbladder Hepatic flexure of colon Lesser omentum Liver, including porta hepatis Peripancreatic soft tissue Stomach, NOS: Distal Transverse colon |
T4 | T4 | RE | RE |
| 710 | Extension to other adjacent organs or tissues: Blood vessel(s) (major): Hepatic artery Portal vein Gallbladder Hepatic flexure of colon Lesser omentum Liver, including porta hepatis Stomach, NOS: Distal Transverse colon |
T4 | T4 | RE | RE |
| 750 | Stomach, proximal | T4 | T4 | D | RE |
| 760 | Peripancreatic soft tissue | T4 | T4 | D | D |
| 765 | 760 + 750 | T4 | T4 | D | D |
| 780 | Stated as T4 with no other information on extension | T4 | T4 | RE | RE |
| 800 | Further contiguous extension | T4 | T4 | 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 |