Summary & Overview
CPT 42804: Biopsy of Visible Nasopharyngeal Lesion
CPT code 42804 represents a diagnostic procedure in which a clinician obtains a biopsy from a visible lesion of the nasopharynx. This procedure is important nationally because it supports definitive tissue diagnosis for conditions ranging from benign inflammatory lesions to malignancy, guiding subsequent treatment decisions and care pathways. The code applies across outpatient and clinic settings where ENT specialists and trained providers perform nasopharyngeal visualization and sampling. Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context and typical service setting for CPT code 42804, an overview of common payer coverage considerations, and what to expect in terms of billing practice and coding relationships. The publication summarizes available benchmarks and common modifier use where documented, highlights relevant coding crosswalks when applicable, and outlines clinical factors that commonly justify the procedure. Data not available in the input is noted where gaps exist.
Billing Code Overview
CPT code 42804 describes a procedure in which the provider obtains a biopsy sample from a visible lesion of the nasopharynx, the portion of the throat located behind the nose. This service is a diagnostic tissue sampling procedure intended to secure material for histopathologic evaluation.
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Service type: Biopsy of nasopharyngeal lesion
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Typical site of service: Clinic, outpatient otolaryngology office, or hospital outpatient setting where nasopharyngeal visualization and biopsy can be performed
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Clinical & Coding Specifications
Clinical Context
A 58-year-old male presents to an otolaryngology clinic with unilateral nasal obstruction and intermittent epistaxis. Nasal endoscopy identifies a suspicious, visible lesion on the nasopharyngeal wall. After discussion of risks and benefits, the otolaryngologist performs a targeted nasopharyngeal biopsy under local anesthesia with endoscopic visualization. The specimen is placed in formalin and sent to pathology for histologic diagnosis. Typical workflow includes pre-procedure consent, topical anesthesia and vasoconstriction, endoscopic visualization, targeted biopsy using forceps or a punch instrument, specimen handling and labeling, and post-procedure monitoring for bleeding or airway compromise. Typical site of service is an outpatient otolaryngology clinic or ambulatory surgery center; hospital outpatient setting can be used for patients requiring monitored anesthesia or complex comorbidity management. Common clinical indications include palpable/visual nasopharyngeal masses, suspected nasopharyngeal carcinoma, chronic unilateral serous otitis media with an associated mass, or unexplained epistaxis with an identified lesion.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Primary procedure | When this biopsy is the primary service furnished during the encounter |
26 |