EOD Primary Tumor
Notes
**Note 1:** Impaired vocal cord mobility may be described as vocal cord paresis, and may suggest invasion of intrinsic laryngeal muscle. Fixation of the vocal cord maybe described as immobility of the arytenoids noted on endoscopy, paralysis of the vocal cords, or deviation of larynx to the fixed side.
**Note 2:** Code 100 for localized tumor only if no information is available to identify further extension.
| Code |
Description |
SS2018 T |
| 000 |
In situ, intraepithelial, noninvasive |
IS |
| 100 |
Involvement adjacent regions(s) of larynx
- WITH normal or impaired mobility
+ Glottis
+ Supraglottis
Tumor limited to larynx with vocal cord fixation
Confined to larynx, NOS
Localized, NOS |
L |
| 200 |
Base of tongue
Hypopharynx, NOS
Paraglottic space
Postcricoid area
Pre-epiglottic tissues
Pyriform sinus (pyriform fossa)
Thyroid cartilage (inner cortex) (minor erosion)
Vallecula |
RE |
| 700 |
Carotid artery (encased)
Cricoid cartilage
Esophagus
Extrinsic muscle(s) of tongue
- Genioglossus
- Geniohyoid
- Hyoglossus
- Mylohyoid
- Palatoglossus
- Styloglossus
Mediastinal structure(s)
Oropharynx, NOS
Prevertebral space
Skin
Soft tissues of neck
Strap muscle(s)
- Omohyoid
- Sternohyoid
- Sternothyroid
- Thyrohyoid
Thyroid cartilage (outer cortex, NOS)
Thyroid gland
Trachea
Further contiguous extension |
D |
| 999 |
Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in medical record
Death Certificate Only |
U |
(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998
(2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001.
(3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL)
(4) Gress, D.M., Edge, S.B., Gershenwald, J.E., et al. **Principles of Cancer Staging**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
(5) Lydiatt, W.M., Patel, S.G., Shah, J.P., et al. **Staging Head and Neck Cancers**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
(6) Patel, S.G., Lydiatt, W.M., Shah, J.P., et al. **Larynx**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
