EOD Primary Tumor
| Code | Description | SS2018 T |
|---|---|---|
| 000 | In situ, intraepithelial, noninvasive | IS |
| 100 | Tumor of any size - WITH or WITHOUT extraglandular extension into the orbital soft tissue - No periosteal or orbital bone involvement or UNKNOWN if involved Localized, NOS | L |
| 200 | Tumor of any size - Periosteal involvement only | RE |
| 300 | Tumor of any size - Periosteal and bone involvement | RE |
| 700 | Involvement of adjacent structures, including - Brain - Cavernous sinus - Orbital bone - Periosteum - Pterygoid fossa - Sinuses - Superior orbital fissure - Temporal fossa | 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 |