What is the main term used in the alphabetic index of the cpt coding manual for incision and drainage of the peri tonsillar abscess

The CPT code used for incision and drainage of the peritonsillar abscess is CPT code 42700 Under Incision Procedures on the Pharynx, Adenoids, and Tonsils, since the incision and drainage is an incision procedure on the tonsil. 

Iwould say c. take responsibility for your behavior