CPT 30100: Intranasal Biopsy for Tissue Diagnosis

CPT code 30100 denotes an intranasal biopsy — removal of a tissue sample from within the nasal cavity for diagnostic evaluation. Nasal biopsies are a key diagnostic tool for evaluating suspicious lesions, chronic inflammatory conditions, and suspected neoplasms of the nasal cavity and adjacent structures. Nationally, accurate coding for this procedure affects diagnostic pathways, clinical documentation, and appropriate claims processing.

Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of payer coverage considerations, common clinical contexts for use, and typical sites of service. The publication summarizes standard coding intent, common modifier usage (listed separately), and the procedural setting implications for ambulatory surgical centers, hospital outpatient departments, and office-based procedures.

The article provides practical benchmarks for how this diagnostic procedure is billed and categorized, highlights policy and documentation elements that influence reimbursement, and situates the code within clinical workflows for nasal pathology evaluation. Data not available in the input is noted where applicable.

Billing Code Overview

CPT code 30100 describes a procedure in which the provider removes a tissue sample from within the nasal cavity for pathologic investigation. This represents a nasal mucosal or intranasal biopsy performed to obtain tissue for diagnostic evaluation.

Service type: Diagnostic tissue biopsy
Typical site of service: Ambulatory surgical center, hospital outpatient department, or office-based procedure room depending on clinical setting and patient needs

Clinical Context

A typical patient is a 45-year-old adult referred to an otolaryngology clinic for evaluation of unilateral nasal obstruction and intermittent epistaxis. After nasal endoscopy demonstrates a suspicious mucosal lesion on the lateral nasal wall, the provider performs a nasal biopsy to obtain tissue for histopathology and culture. The clinical workflow includes pre-procedure consent, topical and/or local anesthesia application in the clinic or procedure room, endoscopic or direct visualization, targeted tissue sampling using forceps or a biopsy punch, hemostasis control, specimen handling and labeling for pathology, and post-procedure instructions with follow-up to review results. The procedure is commonly performed in an outpatient clinic, ambulatory surgical center, or hospital outpatient department when additional monitoring or anesthesia services are required.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing physician work separate from technical services (rare for simple nasal biopsies when facility bills technical component).
`51`	Multiple procedures	Use when multiple distinct procedures are performed the same day in addition to the biopsy.

Taxonomy Code	Specialty	Notes
207Y00000X	Otolaryngology	Primary specialty performing nasal cavity biopsies.
2084P0800X	Diagnostic Radiology	May assist when imaging-guided biopsy is required (less common).
207L00000X	Facial Plastic Surgery	May perform biopsies when lesion management overlaps reconstructive planning.
363LF0000X	Pathology	Receives and interprets specimen; not the performing provider.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`J34.89`	Other specified disorders of nose and nasal sinuses	Represents localized nasal lesions or masses prompting biopsy.
`R09.81`	Nasal congestion	Symptom that may accompany lesions leading to diagnostic biopsy.
`R04.0`	Epistaxis	Common presentation that can indicate underlying pathology requiring biopsy.
`D49.2`	Neoplasm of uncertain behavior of respiratory and intrathoracic organs	Applied when tissue is suspicious but behavior is uncertain pending pathology.
`C30.0`	Malignant neoplasm of nasal cavity	Used when biopsy confirms or is strongly suspected to confirm malignancy.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`30140`	Excision and repair of nasal mucosa; other than limited procedures	May be performed if biopsy leads to excision of a larger lesion.
`31231`	Nasal/sinus endoscopy, diagnostic, unilateral or bilateral (separate procedure)	Often used to visualize and guide the biopsy when endoscopic technique is employed.
`94375`	Collection and preparation of specimen for transport (example code for illustrative purposes)	Not applicable; specific specimen handling codes vary by facility — serves to indicate specimen processing occurs.
`99152`	Physician assistant services for surgery (example non-surgical assist codes)	Use when a qualified non-physician provider assists; actual code selection depends on payer rules.
`99000`	Handling and/or conveyance of specimen for transfer from the physician’s office to a laboratory	Billed when specimen transport services are separately reportable.

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Summary & Overview