| 0 |
In situ: noninvasive, intraepithelial |
| 1 |
Localized only (localized, NOS)
- Confined to nasopharynx, NOS
- Invasive tumor confined to one of the following subsites
+ Inferior wall (superior surface of soft palate)
+ Lateral wall
+ Posterior superior wall (vault)
- Involvement of two or more subsites
+ Lateral wall extending into eustachian tube/middle ear
+ Posterior, inferior, or lateral wall(s) |
| 2 |
Regional by direct extension only
- Any structure listed in Code 1 WITH fixation
- Bone, NOS
- Bony structures of skull base
- Cartilage, NOS
- Cervical vertebra
- Floor of orbit
- Hard palate
- Nasal cavity WITHOUT pharyngeal extension
- Oropharynx
- Paranasal sinus
- Pterygoid structures
- Skull base
- Soft palate, inferior surface including uvula WITHOUT pharyngeal extension
- Soft tissue, NOS (excluding soft tissue of neck) |
| 3 |
Regional lymph node(s) involved only
- Level I
+ Level IA - Submental
+ Level IB - Submandibular (submaxillary), sublingual
- Level II - Upper jugular
+ Jugulodigastric (subdigastric)
+ Upper deep cervical
+ Level IIA - Anterior
+ Level IIB - Posterior
- Level III - Middle jugular
+ Middle deep cervical
- Level IV - Lower jugular
+ Jugulo-omohyoid (supraomohyoid)
+ Lower deep cervical
+ Virchow node
- Level V - Posterior triangle group
+ Posterior cervical
+ Level VA - Spinal accessory
+ Level VB - Transverse cervical, supraclavicular
- Level VI - Anterior compartment group
+ Laterotracheal
+ Paralaryngeal
+ Paratracheal - above suprasternal notch
+ Perithyroidal
+ Precricoid (Delphian)
+ Prelaryngeal
+ Pretracheal - above suprasternal notch
+ Recurrent laryngeal
- Level VII - Superior mediastinal group (for other mediastinal node(s) see code 7)
+ Esophageal groove
+ Paratracheal - below suprasternal notch
+ Pretracheal - below suprasternal notch
- Other groups
+ Cervical, NOS
+ Deep cervical, NOS
+ Facial
* Buccinator (buccal)
* Mandibular
* Nasolabial
+ Internal jugular, NOS
+ Parapharyngeal
+ Parotid
* Infraauricular
* Intraparotid
* Periparotid
* Preauricular
+ Retroauricular (mastoid)
+ Retropharyngeal
+ Suboccipital
- 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)
+ Brain
+ Cranial nerve involvement
+ Hypopharynx
+ Infratemporal fossa/masticator space
+ Intracranial extension, NOS
+ Orbit except bone of floor of orbit
+ Parotid gland
+ Soft tissues of neck
- Distant lymph node(s), NOS
+ Mediastinal (excluding superior mediastinal node(s))
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant mets WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
