Summary & Overview
CPT 31231: Diagnostic Nasal Endoscopy, Unilateral or Bilateral
CPT code 31231 is a widely utilized billing code for diagnostic nasal endoscopy procedures performed by otolaryngology specialists. This code covers both unilateral and bilateral examinations, enabling clinicians to directly visualize the nasal passages and sinuses for diagnostic purposes. The procedure is most often conducted in an office setting, supporting timely evaluation and management of conditions such as chronic sinusitis, nasal congestion, and nasal polyps.
Major national payers including Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare recognize and reimburse for CPT code 31231. The publication provides an overview of payer coverage, clinical indications, and relevant coding practices, including common modifiers used to specify laterality and distinct procedural services. Readers will gain insight into the clinical context for nasal endoscopy, associated diagnoses, and related CPT codes, as well as current policy updates and reimbursement benchmarks. The analysis is designed to inform stakeholders about the utilization and billing landscape for diagnostic nasal endoscopy across the United States.
CPT Code Overview
CPT code 31231 represents a diagnostic nasal endoscopy, performed unilaterally or bilaterally as a separate procedure. This service is commonly provided by otolaryngology specialists to evaluate the nasal passages and sinuses for a range of conditions. The typical site of service for this procedure is the office setting (Place of Service 11), allowing for efficient assessment and management of nasal and sinus disorders in an outpatient environment.
Clinical & Coding Specifications
Clinical Context
A patient presents to an otolaryngology office with symptoms such as nasal congestion, sinus pain, or suspected nasal polyps. The provider performs a diagnostic nasal endoscopy (CPT 31231) to directly visualize the nasal passages and sinuses. This procedure may be done unilaterally or bilaterally, depending on the clinical findings. The workflow typically includes patient history, physical examination, and the endoscopic procedure to assess for conditions like chronic or acute sinusitis, nasal polyps, or other nasal disorders.
Coding Specifications
-
Modifiers:
50- Bilateral Procedure: Used when the endoscopy is performed on both sides.RT- Right Side: Used when the procedure is performed only on the right nasal passage.LT- Left Side: Used when the procedure is performed only on the left nasal passage.59- Distinct Procedural Service: Used when the procedure is distinct from other services performed on the same day.
-
Provider Taxonomies: