| 1 |
Localized only (localized, NOS)
- Confined to orbit (including soft tissues) |
| 2 |
Regional by direct extension only
- Adjacent paranasal sinuses
- Bony walls
- Conjunctiva
- Cranium
- Diffuse invasion of orbital tissue and bony walls
- Globe
- Orbital tissues (excluding orbit primary site)
- Periorbital structures |
| 3 |
Regional lymph node(s) involved only
- Cervical, NOS
- Mandibular, NOS
+ Submandibular (submaxillary)
- Parotid, NOS
+ Infra-auricular
+ Preauricular
- Regional lymph node(s), NOS
+ Lymph node(s), NOS |
| 4 |
Regional by BOTH direct extension AND regional lymph node(s) involved
- Codes (2) + (3) |
| 7 |
Distant site(s)/lymph node(s) involved
- Distant site(s) (including further contiguous extension)
+ Central nervous system
+ Eyelid(s)
+ Nasal cavity
+ Temporal fossa
- Distant lymph node(s), NOS
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
