Summary & Overview
HCPCS C9745: Nasal Endoscopy, Balloon Dilation of Eustachian Tube
HCPCS Level II code C9745 denotes a surgical nasal endoscopy procedure for balloon dilation of the eustachian tube, an increasingly used minimally invasive intervention for eustachian tube dysfunction. Nationally, this code identifies a targeted ENT procedure often performed in ambulatory surgical centers and hospital outpatient departments and has implications for procedure coding, coverage determinations, and payment policy across major commercial and government payers. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for eustachian tube balloon dilation, common sites of service, payer coverage patterns and benchmark considerations, typical modifiers used in billing, and policy or coding updates relevant to HCPCS Level II code C9745. The summary highlights billing challenges, documentation needs, and where stakeholders typically look for coverage criteria and medical necessity guidance. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code C9745 describes a nasal endoscopy, surgical; balloon dilation of eustachian tube. This procedure is an endoscopic surgical intervention performed via the nasal passages to access and dilate the eustachian tube using a balloon device.
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Service type: Surgical nasal endoscopy for eustachian tube balloon dilation
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Typical site of service: Ambulatory surgical center or hospital outpatient department
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Clinical & Coding Specifications
Clinical Context
A 42-year-old patient with chronic eustachian tube dysfunction presents with recurrent otitis media with effusion, aural fullness, and conductive hearing loss despite medical therapy including nasal steroid sprays and autoinflation. Otolaryngology evaluation documents persistent middle ear effusion and abnormal tympanometry (Type B) with conductive hearing loss on audiometry. After counseling, the patient is scheduled for nasal endoscopy with balloon dilation of the eustachian tube under monitored anesthesia care in an ambulatory surgery center. The clinical workflow includes preoperative assessment and informed consent, topical and local nasal decongestion, diagnostic nasal endoscopy to inspect the nasopharyngeal orifice of the eustachian tube, transnasal introduction of a balloon catheter into the eustachian tube, controlled balloon inflation for a defined period to dilate the cartilaginous portion, post-dilation endoscopic inspection for mucosal injury or bleeding, and postoperative observation with discharge instructions for otic symptoms and follow-up audiometry and tympanometry.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work or complexity substantially exceeds typical for balloon dilation due to extensive surgical steps or unexpected difficult anatomy. |
23 |