Summary & Overview
CPT 31529: Direct Laryngoscopy with Dilation, Subsequent
CPT code 31529 denotes direct laryngoscopy with dilation for treatment of laryngeal stenosis and represents a subsequent dilation procedure. This code captures an operative airway intervention in which a provider inspects the larynx and may dilate narrowed segments, with optional tracheoscopy for tracheal visualization. The code is relevant nationally as management of airway stenosis affects perioperative planning, resource utilization in surgical suites and ambulatory surgery centers, and clinical coding for airway procedures. Key payers typically included in analyses are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare and Medicare. Readers will find a concise clinical context for CPT code 31529, including expected service setting and procedure intent, and an outline of what billing and coding professionals and health system managers should expect when this code appears on service lines. The publication presents benchmarks and payment-context summaries where available, highlights typical sites of service, and summarizes policy and documentation considerations tied to subsequent laryngoscopic dilation procedures. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 31529 describes direct laryngoscopy with dilation for management of laryngeal stenosis. The procedure involves using a laryngoscope to visualize the larynx (voice box) to identify any narrowing and passing a dilator through the larynx to correct an abnormal stenosis. The provider may also perform tracheoscopy to visualize the trachea (windpipe), but tracheoscopy is optional for this code. This entry represents a subsequent dilation procedure rather than an initial diagnostic-only laryngoscopy.
Service type: Operative airway procedure — laryngoscopy with dilation
Typical site of service: Hospital operating room or ambulatory surgical center, with potential performance in an outpatient surgical setting when clinically appropriate.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult who presents with progressive dyspnea, stridor, voice changes, or recurrent respiratory infections after prior airway injury, intubation, or inflammatory disease. The otolaryngologist evaluates the patient in clinic and performs preoperative assessment including flexible laryngoscopy and imaging as indicated. In the operating room under general anesthesia the provider performs direct laryngoscopy using a laryngoscope to inspect the larynx and determine the level and severity of stenosis. A dilator or serial dilation instruments are passed through the laryngeal lumen to mechanically widen the narrowed segment. Tracheoscopy may be performed through the same airway exposure to inspect the trachea. This CPT code, 31529, describes a subsequent dilation procedure (repeat dilation) of the larynx after an initial dilation has been performed previously. Typical site of service is the hospital operating room or ambulatory surgical center. Typical clinical workflow includes preoperative evaluation and consent, anesthesia induction, direct laryngoscopy with inspection, dilation(s) of the stenotic segment, hemostasis and airway assessment, and post-anesthesia monitoring with consideration for discharge or short inpatient observation depending on airway stability and comorbidities.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Normal, uncomplicated postoperative recovery |