CPT® Code 31553

The procedure described by CPT® Code 31553 refers to a laryngoplasty performed specifically for the treatment of laryngeal stenosis in patients younger than 12 years of age. Laryngeal stenosis is a condition characterized by the narrowing of the airway at the level of the larynx, which can occur in various forms, including partial or circumferential narrowing of the supraglottis, glottis, or subglottis. This condition can be congenital, often resulting from the failure of the laryngeal lumen to recanalize after the epithelial lamina has formed, leading to stenosis primarily in the subglottic area. The stenosis may present as membranous, circumferential and symmetric, or cartilaginous, with potential deformities of the cricoid cartilage or tracheal ring that may protrude into the airway either symmetrically or asymmetrically. In addition to congenital causes, laryngeal stenosis can also be acquired due to various factors such as trauma from endotracheal intubation, gastroesophageal reflux, infections, autoimmune disorders, malignancies, amyloidosis, inhalation burns, or radiation exposure. Patients with laryngeal stenosis may exhibit symptoms such as inspiratory or biphasic stridor, apnea, tachypnea, dyspnea, voice hoarseness, aphonia, and dysphagia. The primary goal of performing a laryngoplasty in this context is to create an adequate airway while preserving or improving the quality of the voice. During the procedure, an incision is made at the level of the larynx to access the thyroid cartilage, and a window is drilled into the cartilage to facilitate the dissection of the stenotic area. This may involve the removal of membranous webs or excess cartilage. A graft, which can be sourced from various tissues such as autogenous costal cartilage, auricular cartilage, thyroid cartilage, or buccal mucosa, is then sutured in place. To ensure the stability of the graft and to expand the reconstructed area, an indwelling stent made of molded silicone or Teflon may be placed in the airway. This procedure is critical for restoring normal airway function and improving the patient's quality of life.