EOD Primary Tumor

Notes

**Note:** Code 300 If there is fixation of hemilarynx or larynx.
Code Description SS2018 T
000 In situ, intraepithelial, noninvasive IS
100 Any size tumor confined to one site WITHOUT fixation - Laryngopharynx - Postcricoid area - Posterior pharyngeal wall - Pyriform sinus Confined to hypopharynx Localized, NOS L
150 Any size tumor confined to more than one subsite in code 100 - WITHOUT fixation L
200 Any size tumor with extension to - Hemilarynx WITHOUT fixation - Oropharynx WITH or WITHOUT fixation Any structure listed in code 100 with fixation RE
300 Esophageal mucosa Fixation of hemilarynx or larynx RE
400 Central compartment soft tissues of neck including - Prelaryngeal strap muscle(s) - Subcutaneous fat Cricoid cartilage Esophageal muscle Extrinsic muscle of tongue Fixation of oropharynx Hard palate Hemilarynx Mandible Medial pterygoid Oropharynx Prevertebral fascia/muscle(s) Soft tissues of neck Thyroid cartilage/gland RE
500 Hyoid bone D
600 Carotid artery (encased) RE
700 Carotid artery (encased) with involvement of the hyoid bone OR Base of tongue Floor of tongue Mediastinal structure(s) Nasopharynx 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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