Minimally invasive sinus procedure

A minimally invasive sinus procedure is a surgical technique that uses small incisions or natural openings to treat chronic sinusitis, such as balloon sinuplasty and endoscopic sinus surgery. Health insurers like Aetna and UnitedHealthcare typically cover medically necessary minimally invasive sinus procedures when documentation shows failed medical management.

CPT codes for these procedures include 31295 (balloon dilation of maxillary sinus ostium) and 31276 (endoscopic resection of nasal polyp). Medicare covers balloon sinuplasty if the patient meets criteria, including documented symptoms over 12 weeks and imaging evidence.

Out-of-pocket costs for insured patients average $500–$3,000 depending on deductible status and network participation. Insurers require preauthorization for most minimally invasive sinus surgeries to confirm necessity; examples include Cigna’s prior authorization policy for CPT code 31296, per YourInsuranceInfo.

Denials often occur due to lack of radiographic proof or insufficient trial of antibiotics; appeals succeed with detailed clinical notes and CT results. FSA/HSA funds can pay copays or coinsurance for eligible minimally invasive sinus procedures per IRS Publication 502 guidelines.