| 0 |
In situ: noninvasive, intraepithelial |
| 1 |
Localized only (localized, NOS)
- Confined to buccal mucosa (inner cheek), NOS
- Lamina propria
- Musculature (buccinator)
- Submucosa |
| 2 |
Regional by direct extension only
- Gingiva
- Lateral pharyngeal wall
- Lip(s) including commissure
- Subcutaneous soft tissue of cheek
- Tonsillar pillars and fossae
- Tonsils |
| 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)
+ Bone, NOS
* Cartilage (mandible, maxilla, NOS)
* Cortical bone (mandible, maxilla, NOS)
* Mandible, NOS
* Maxilla, NOS
* Palatine, NOS
* Trabecular bone (mandible, maxilla, palatine, NOS)
+ Deep (extrinsic) muscle of tongue
* Genioglossus
* Hyoglossus
* Palatoglossus
* Styloglossus
+ Internal carotid artery (encased)
+ Masticator space
+ Maxillary sinus (antrum)
+ Nasal cavity
+ Pterygoid plates
+ Skin of cheek (WITH or WITHOUT ulceration)
+ Skull base
+ Specified bone (other than maxilla, mandible, palatine)
+ Tongue
- Distant lymph node(s), NOS
+ Mediastinal (excluding superior mediastinal node(s))
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant metastasis WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
