EOD Primary Tumor
| Code | Description | SS2018 T |
|---|---|---|
| 000 | In situ, intraepithelial, noninvasive (Adeno) carcinoma, noninvasive, in a polyp or adenoma | IS |
| 050 | Low-grade appendiceal mucinous neoplasm confined by the muscularis propria (LAMN) Acellular mucin or mucinous epithelium may invade into muscularis propria | IS |
| 070 | Lamina propria Mucosa (intramucosal, NOS) Muscularis mucosae | L |
| 100 | Submucosa Confined to appendix, NOS Confined to polyp, NOS Localized, NOS | L |
| 200 | Muscularis propria | L |
| 300 | Extension through wall, NOS Invasion through muscularis propria Non-peritonealized pericolic tissues invaded Perimuscular tissue invaded Subserosa Transmural, NOS Wall, NOS | L |
| 400 | Adjacent tissue(s), NOS Connective tissue Fat, NOS Mesenteric fat Mesentery Mesoappendix Pericolic fat | RE |
| 500 | Invasion of/through serosa (mesothelium) (visceral peritoneum) | RE |
| 600 | For mucinous tumor only - Peritoneal involvement confined within right lower quadrant + WITH or WITHOUT further local extension | D |
| 700 | Abdominal wall Adherent to other organs or structures Greater omentum Retroperitoneum (excluding fat) Small intestine Tumor found in adhesion(s) if microscopic examination performed | RE |
| 750 | Adrenal (suprarenal) gland Bladder Diaphragm Fallopian tube Fistula to skin Gallbladder Kidney Liver Other segment(s) of colon/rectum via serosa Ovary Ureter Uterus Further contiguous extension | D |
| 800 | No evidence of primary tumor | U |
| 999 | Unknown; extension not stated Primary tumor cannot be assessed Not documented in patient record Death Certificate Only | U |