This CPB is revised to state: 1) adult lingual or pharyngeal tonsillectomy, as an isolated procedure, is considered experimental and investigational for the treatment of adult OSA; 2) adult tonsillectomy is considered medically necessary for UPPP for adult OSA where the tonsils compromise the airway space; 3) an adenoidectomy is considered medically necessary where adenoid hyperplasia results in significant nasopharyngeal obstruction; 4) a single panoramic x-ray of the jaws and a lateral cephalometric x-ray are considered medically necessary for the evaluation for an oral appliance for OSA; 5) a second lateral cephalometric x-ray with the bite registration or oral appliance in place is considered medically necessary to visualize the mandibular repositioning and the changes in the airway space; 6) turbinectomy is considered medically necessary for severe nasal obstruction due to hypertrophied inferior nasal turbinates; 7) polypectomy is considered medically necessary for severe nasal obstruction due to nasal polyps; and 8) uvulectomy is considered medically necessary for neoplasm of uvula.