EOD Primary Tumor

Notes

**Note 1:** **Impaired vocal cord mobility** * 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:** **Localized tumor** * Code 100 for localized tumor only if no information is available to identify further extension. **Note 3:** **Limited to the larynx** * 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 Paraglottic space Thyroid cartilage (inner cortex) (minor erosion) 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, NOS 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 medical record Death Certificate Only U
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