Table 2.

Distribution of surgical interventions.

ICD-9-CM code	Intervention	N	%
30.1	Hemilaryngectomy	1	0.7
30.21	Epiglottectomy	0	0
30.22	Vocal cordectomy	56	40
30.29	Other partial laryngectomy	10	7.1
30.3	Total laryngectomy	21	15
30.4	Radical laryngectomy	8	5.7
31.45	Open biopsy of larynx and trachea	8	5.7
40.40	Radical neck dissection	4	2.9
40.41	Radical neck dissection, unilateral	29	20.7
40.42	Radical neck dissection, bilateral	3	2.2
Total		140	100.0