Summary & Overview

CPT 31577: Flexible Laryngoscopy with Laryngeal Foreign Body Removal

CPT code 31577 identifies flexible laryngoscopy with endoscopic removal of foreign body(ies) from the larynx. The code covers a combined diagnostic and therapeutic procedure performed when a flexible laryngoscope is used to inspect the voice box and extract foreign materials that threaten airway patency or vocal function. Nationally, this code is relevant for emergency and elective airway procedures across otolaryngology, emergency medicine, and surgical settings.

Key payers typically included in analyses of reimbursement and coverage patterns are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of the clinical context for the procedure, common sites of service, and what to expect in payer coverage patterns. The publication summarizes benchmark considerations, coding nuances relevant to documentation and billing, and recent policy or guideline updates that affect use of the code.

This summary is intended to help coding professionals, practice managers, and clinicians understand the clinical purpose of CPT code 31577, typical settings where it is provided, and the types of coverage and policy issues that commonly surround laryngeal foreign body removal procedures.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 31577flexible laryngoscopylaryngeal foreign body removalendoscopyotolaryngologyprocedure codingambulatory surgeryairway management

Billing Code Overview

CPT code 31577 describes inspection of the larynx using a flexible laryngoscope with removal of foreign body(ies) from the larynx. The procedure involves endoscopic visualization of the voice box (larynx) to detect abnormalities or obstructions and the retrieval of any foreign material found.

Service type: Diagnostic endoscopy with therapeutic foreign body removal
Typical site of service: Operating room, ambulatory surgical center, or procedure suite where flexible laryngoscopy and endoscopic foreign body removal can be performed under appropriate monitoring and anesthesia as needed.

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult or pediatric patient who presents to an outpatient otolaryngology clinic or the hospital emergency department with symptoms such as throat pain, foreign body sensation, dysphonia, cough, stridor, or acute airway compromise after ingestion or aspiration of a small object. The provider performs a flexible laryngoscopy using a flexible fiberoptic laryngoscope to inspect the larynx, vocal folds, subglottic area, and hypopharynx for abnormalities or retained foreign bodies. If a foreign body is identified and accessible, the provider removes it during the same encounter using flexible endoscopic instruments. The procedure is commonly performed under topical anesthesia with or without conscious sedation in an ambulatory clinic, endoscopy suite, or operating room depending on patient stability, cooperation, and airway risk. Typical workflow steps: initial evaluation and airway assessment, topical anesthesia and preparation, flexible laryngoscopy inspection, endoscopic retrieval of foreign body if present, post-procedure airway reassessment, and documentation of findings and any immediate complications. Common payors encountered for billing include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, BUCA, and Medicare.

Coding Specifications

Modifier	Description	When to Use
`23`	Unusual anesthesia	Use when unexpected severe systemic disturbance requires general anesthesia for an otherwise normally not anesthetized diagnostic/therapeutic flexible laryngoscopy and foreign body removal.
`26`	Professional component	Use when billing professional interpretation separately from facility technical component.
`51`	Multiple procedures	Use when multiple distinct procedures are performed during the same session and payer allows multiple-procedure reporting.
`52`	Reduced services	Use when the procedure is partially reduced or not completed as documented.
`53`	Discontinued procedure	Use when the procedure is started but terminated due to patient instability or other documented reasons.
`59`	Distinct procedural service	Use when an unrelated, separate procedure or service is performed at a different anatomic site or at a separate session on the same day.
`62`	Two surgeons	Use when co-surgeons of distinct specialties perform portions of the procedure as documented.
`73`	Discontinued outpatient hospital/ambulatory surgery prior to anesthesia	Use when the procedure is cancelled after patient preparation but before administration of anesthesia in an outpatient setting.
`78`	Return to OR for related procedure during postoperative period	Use when a related return to the operating room is required for complications of the initial laryngoscopy/foreign body removal.
`80`	Assistant surgeon	Use when an assistant surgeon participates and payer allows assistant surgeon billing.
`82`	Unlisted assistant when qualified resident unavailable	Use when assistant surgeon services are provided and a qualified resident is not available.
`59`	Distinct procedural service	Use when a separate endoscopic procedure is performed distinct from the primary laryngoscopy.
`76`	Repeat procedure by same physician	Use if the same physician repeats the laryngoscopy/foreign body removal later the same day.
`77`	Repeat procedure by another physician	Use if another physician repeats the procedure later the same day.

Taxonomy Code	Specialty	Notes
207Y00000X	Otolaryngology	Primary specialty performing flexible laryngoscopy and laryngeal foreign body removal.
208000000X	Emergency Medicine	Performs bedside flexible laryngoscopy and initial foreign body management in ED settings.
2084P0800X	Pediatric Otolaryngology	Subspecialty for pediatric patients requiring laryngeal foreign body removal.
207L00000X	Head and Neck Surgery	Surgeons providing operative management for complex airway foreign bodies.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`T17.9`	Foreign body in respiratory tract, unspecified	Direct indication for airway/laryngeal evaluation and removal.
`T18.1`	Foreign body in pharynx	Common presenting diagnosis when an ingested object becomes lodged near the larynx or hypopharynx.
`J39.8`	Other diseases of the pharynx	Symptoms such as obstruction or foreign body sensation prompting laryngoscopic inspection.
`R09.02`	Stridor	Sign of partial airway obstruction prompting urgent laryngeal evaluation.
`R49.0`	Dysphonia	Voice change that may be caused by laryngeal irritation from a foreign body and warrants laryngoscopy.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`31575`	Laryngoscopy, flexible; diagnostic, with or without stroboscopy	Often performed as the initial diagnostic flexible laryngoscopy; `31577` is used when a foreign body is removed during the procedure.
`31620`	Bronchoscopy, flexible, diagnostic, with or without cell washing	Performed when suspected lower airway aspiration requires bronchoscopic inspection after laryngeal evaluation.
`31505`	Laryngoscopy, direct, with or without tracheoscopy; diagnostic, with or without biopsy	Used when rigid/direct laryngoscopy is required for removal of larger or impacted laryngeal foreign bodies not retrievable via flexible scope.
`31231`	Nasopharyngoscopy, flexible; diagnostic, with or without collection of specimen(s) by brushing or washing	Performed when concurrent nasopharyngeal evaluation is needed during flexible laryngoscopy encounters.
`99283`	Emergency department visit, intermediate	Common E/M code for emergency department evaluation of patients presenting with airway foreign body symptoms prior to performing `31577`.