| 0 |
In situ: noninvasive, intraepithelial |
| 1 |
Localized only (localized, NOS)
- Confined to thyroid, NOS
- Into thyroid capsule, but not beyond
- Multiple foci confined to thyroid
- Single invasive tumor confined to thyroid |
| 2 |
Regional by direct extension only
- Blood vessel(s) (major)
+ Carotid artery (encased)
+ Jugular vein
+ Thyroid artery or vein
- Cricoid cartilage
- Esophagus
- Extrathyroidal extension (microscopic, macroscopic, NOS)
- Larynx
- Nerves
+ Recurrent laryngeal
+ Vagus nerve
- Parathyroid
- Pericapsular soft tissue/connective tissue
- Sternocleidomastoid muscle
- Strap muscle(s)
+ Omohyoid
+ Sternohyoid
+ Sternothyroid
+ Thyrohyoid
- Subcutaneous soft tissue
- Thyroid cartilage
- Trachea
- Tumor described as "FIXED to adjacent tissues" |
| 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)
+ Gross extrathyroidal extension invading
* Bone
* Mediastinal tissues
* Prevertebral fascia
* Skeletal muscle, other than strap or sternocleidomastoid muscle
- Distant lymph node(s), NOS
- Distant metastasis, NOS
+ Carcinomatosis
+ Distant mets WITH or WITHOUT distant lymph node(s) |
| 9 |
Unknown if extension or metastasis |
