Summary & Overview
CPT 31576: Flexible Laryngoscopy with Laryngeal Biopsy
CPT code 31576 denotes flexible laryngoscopy with biopsy of laryngeal tissue — a combined diagnostic and interventional procedure used to visualize the larynx and obtain tissue for pathologic evaluation. Nationally, this code matters for evaluating access to timely diagnostic evaluation of voice, airway, and suspected laryngeal lesions, and for aligning coverage and reimbursement across payers.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Coverage and reimbursement practices for 31576 affect referral patterns, site-of-service decisions (clinic vs ambulatory surgical center vs hospital outpatient), and utilization management for otolaryngology and head & neck services.
Readers will learn the clinical context of the code, typical sites of service, common billing considerations, and the types of benchmarks and policy updates to watch for related to endoscopic laryngeal procedures. The summary highlights where data is available and notes when input fields are missing. The discussion is framed for a national audience and addresses how payer policies and coding specificity can influence clinical workflows, documentation requirements, and claim submission for flexible laryngoscopy with biopsy.
Billing Code Overview
CPT code 31576 describes a diagnostic and therapeutic procedure in which a provider uses a flexible laryngoscope to examine the larynx (voice box) and performs a biopsy of laryngeal tissue to detect or evaluate abnormalities. The procedure combines visualization of the vocal cords and surrounding laryngeal structures with tissue sampling for histologic analysis.
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Service type: Flexible laryngoscopy with laryngeal biopsy
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Typical site of service: Ambulatory surgical center or hospital outpatient setting; may also be performed in an otolaryngology clinic with appropriate endoscopy and biopsy capability
Clinical & Coding Specifications
Clinical Context
A 58-year-old male with progressive hoarseness and intermittent throat pain is referred to otolaryngology for evaluation. Flexible laryngoscopy with biopsy is scheduled in an ambulatory endoscopy suite. The patient arrives fasting, completes informed consent, and topical anesthesia with lidocaine is applied to nasal passages and oropharynx. A flexible fiberoptic laryngoscope is advanced transnasally to visualize the nasal cavity, pharynx, and larynx. Suspicious mucosal lesions on the vocal fold are identified and sampled using through-the-scope biopsy forceps. Specimens are placed in formalin and sent to pathology. Hemostasis is obtained, and the patient is observed briefly for airway compromise or bleeding before discharge with return precautions.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing physician/surgeon reports only the professional interpretation/biopsy services and a facility bills for technical services |
52 | Reduced services | When the laryngoscopy/biopsy is partially reduced or incomplete due to anatomy or patient intolerance |