Summary & Overview
CPT 31296: Endoscopic Frontal Sinus Dilation
CPT code 31296 represents an endoscopic frontal sinus dilation performed through the nasal cavity to enlarge the ostium of the frontal sinus. This minimally invasive otolaryngology procedure is used to improve sinus drainage and address frontal sinus obstruction. Its clinical relevance spans ENT surgical practice, ambulatory surgery centers, and hospital outpatient departments as demand for endoscopic sinus interventions grows.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise national overview of what CPT code 31296 denotes, the typical clinical setting, and the service type. The publication outlines common billing considerations, related service lines, and how this procedure fits into endoscopic sinus care pathways.
The piece provides benchmarks and contextual information useful for clinicians, billing professionals, and policy analysts: procedural definition and clinical context, typical sites of service, payer coverage landscape, and related billing themes. Data not available in the input is identified where applicable.
Billing Code Overview
CPT code 31296 describes a procedure in which the provider passes an endoscope through the nasal cavity to dilate the ostium (opening) of the frontal sinus. This is an endoscopic frontal sinus dilation procedure performed via the nasal passages.
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Service type: Endoscopic sinus procedure (frontal sinus dilation)
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Typical site of service: Hospital outpatient department, ambulatory surgical center, or specialized ENT clinic with endoscopic surgical capability
Clinical & Coding Specifications
Clinical Context
A 38-year-old patient presents to the otolaryngology clinic with a 9-month history of refractory frontal sinus pressure, purulent rhinorrhea, and recurrent acute exacerbations despite multiple courses of antibiotics and intranasal corticosteroids. Imaging with CT of the sinuses demonstrates stenosis of the frontal sinus ostium with mucocele formation and impaired frontal sinus drainage. After preoperative evaluation, the patient is taken to the ambulatory surgical center for an endoscopic frontal sinusotomy. Under general anesthesia, a nasal endoscope is passed through the nasal cavity to visualize the frontal recess. Guided instrumentation and balloon dilation are used to enlarge the frontal sinus ostium, restore patency, and allow drainage. Hemostasis is achieved, topical agents applied, and the patient is observed in recovery and discharged home same day with postoperative saline irrigations and follow-up in 1–2 weeks.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physician's professional interpretation or service separate from technical components. |
50 | Bilateral procedure | Use when the frontal sinus dilation is performed on both left and right sides and payer requires bilateral modifier. |