EOD Primary Tumor
Notes
**Note 1:** Impaired vocal cord mobility, also described as vocal cord paresis, may suggest invasion of intrinsic laryngeal muscle. Fixation of the vocal cord may be described as immobility of the arytenoids noted on endoscopy, vocal cord paralysis, or deviation of larynx to fixed side.
**Note 2:** Code 100 for localized tumor only if no information is available to identify further extension.
**Note 3:** Tumor limited to the larynx (code 200) includes tumor involving, but limited to, the supraglottis, glottis and subglottis.
| Code |
Description |
SS2018 T |
| 000 |
In situ, intraepithelial, noninvasive |
IS |
| 100 |
Tumor limited to the subglottis
Invasive tumor with normal vocal cord mobility
Localized, NOS |
L |
| 200 |
Tumor involves adjacent regions(s) of larynx
- Glottis
- Supraglottis
WITH normal or impaired mobility
Limited to larynx, NOS |
L |
| 400 |
Tumor limited to larynx with vocal cord fixation
Invasion of
- Inner cortex of the thyroid cartilage
- Paraglottic space |
RE |
| 500 |
Base of tongue
Hypopharynx, NOS
Postcricoid area
Pre-epiglottic tissues
Pyriform sinus (pyriform fossa)
Vallecula |
RE |
| 600 |
Cricoid cartilage
Esophagus
Extrinsic muscles of tongue
- Genioglossus
- Geniohyoid
- Hyoglossus
- Mylohyoid
- Palatoglossus
- Styloglossus
Oropharynx
Skin
Soft tissues of neck
Strap muscle(s)
- Omohyoid
- Sternohyoid
- Sternothyroid
- Thyrohyoid
Thyroid cartilage (outer cortex, NOS)
Thyroid gland
Trachea |
D |
| 700 |
Carotid artery (encased)
Mediastinal structure(s)
Prevertebral space
Further contiguous extension |
D |
| 999 |
Unknown; extension not stated
Primary tumor cannot be assessed
Not documented in patient 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: 3-30
(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: 55-65
(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: 149-161
