CPT® Code 31573

Laryngoscopy, flexible; with therapeutic injection(s) (eg, chemodenervation agent or corticosteroid, injected percutaneous, transoral, or via endoscope channel), unilateral

The procedure described by CPT® Code 31573 involves the use of a flexible laryngoscope to perform a therapeutic injection into a unilateral vocal fold. This procedure is primarily aimed at addressing various vocal cord issues, such as reducing scarring, edema, or muscle spasms that may affect vocal function. The injection can also serve as an augmentation technique to treat conditions like unilateral vocal cord paralysis or bowing, which can result from muscle atrophy, paresis, or age-related changes in the larynx, known as presbylaryngis. The materials used for injection can vary and may include corticosteroids, chemodenervation agents like botulinum toxin, and other substances such as gelfoam, collagen, micronized AlloDerm, Teflon, and calcium hydroxyapatite. The procedure typically begins with the application of a topical anesthetic to ensure patient comfort, followed by the careful insertion of the laryngoscope through the nasal passage to visualize the larynx and vocal cords. Depending on the approach—transoral, percutaneous, or endoscopic—the injection is administered under direct visualization to ensure precision and effectiveness. This procedure is crucial for patients experiencing vocal cord dysfunction, as it can significantly improve their vocal quality and overall quality of life.