CPT® Code 31570

This procedure, known as laryngoscopy with injection into the vocal cord(s), is a therapeutic intervention primarily aimed at addressing vocal cord atrophy or paralysis. It is commonly referred to as injection medialization laryngoplasty. During this procedure, a direct laryngoscope is utilized, which allows the physician to visualize the anatomical structures of the larynx and surrounding areas using fiberoptic technology. The direct laryngoscope can be either a rigid angled scope or a flexible scope, enabling comprehensive examination of the oral cavity, oropharynx, hypopharynx, larynx, and trachea. The visualization of the vocal cords is critical, as it allows for precise placement of the injection. The laryngoscope is typically suspended to maintain a stable view of the vocal cords, and additional tools such as an operating microscope or telescope may be employed to enhance the examination and facilitate the injection process. The injection itself is performed lateral to the thyroarytenoid muscle within the paraglottic space, utilizing either a resorbable material for temporary effects or an implant material for more permanent results. This injection serves to bulk up the vocal cord, repositioning it closer to a normal anatomical position, which can significantly improve vocal function. Following the injection, the physician assesses the patient's response to the treatment to determine if the desired outcome has been achieved or if further injections are necessary. The procedure can be conducted unilaterally or bilaterally, depending on the patient's specific condition and needs.