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Note: If Extension code is 00 or 05, Behavior Code must be 2. If Extension code is 10, Behavior Code must be 3.
| Code | Description | TNM Map | SS77 Map | SS2000 Map |
| 00 | Carcinoma in situ, NOS Non-invasive, intraepithelial |
Tis | IS | IS |
| 05 | Papillary noninvasive carcinoma | Ta | IS | IS |
| 10 | Subepithelial connective tissue (lamina propria, submucosa) invaded | T1 | L | L |
| 20 | Muscularis invaded | T2 | L | L |
| 30 | Localized, NOS | T1 | L | L |
| 35 | Extension to ureter from renal pelvis | T2 | RE | RE |
| 40 | Extension to adjacent (connective) tissue: Peripelvic/periureteric tissue Retroperitoneal soft/connective tissue |
T3 | RE | RE |
| 60 | For renal pelvis only: Ipsilateral kidney parenchyma and kidney, NOS |
T3 | RE | RE |
| 62 | OBSOLETE, Extension to ureter from renal pelvis, cases coded to 35 |
T4 | RE | RE |
| 63 | Psoas muscle from ureter | T4 | RE | RE |
| 65 | Extension to bladder from ureter Implants in ureter |
T4 | RE | RE |
| 66 | Extension to major blood vessel(s): Aorta Renal artery/vein Vena cava (inferior) Tumor thrombus in a renal vein, NOS |
T4 | RE | RE |
| 67 | Adrenal (suprarenal) gland from renal pelvis | T4 | RE | RE |
| 68 | Duodenum from right renal pelvis or right ureter | T4 | RE | RE |
| 70 | Extension to: Ascending colon from right renal pelvis Bladder (wall or mucosa) from renal pelvis Colon, NOS Descending colon from left renal pelvis Ipsilateral kidney parenchyma from ureter Liver Pancreas Perinephric fat via kidney Spleen |
T4 | D | D |
| 75 | Ascending colon from right ureter Descending colon from left ureter |
T4 | RE | D |
| 80 | Further contiguous extension, including: For ureter: Prostate Uterus |
T4 | D | D |
| 95 | No evidence of primary tumor | T0 | U | U |
| 99 | Unknown extension Primary tumor cannot be assessed Not documented in patient record |
TX | U | U |
