CPT 57105 Vaginal Lesion Biopsy Reimbursement

CPT code 57105 represents evaluation and biopsy of a large lesion or cyst on the vaginal mucosa. This diagnostic gynecologic procedure is used to obtain tissue for histopathologic examination when visual or symptomatic findings suggest the need to rule out neoplastic, infectious, or other pathologic processes. Nationally, accurate use of this code supports appropriate clinical documentation, procedure-level reporting, and payment for office- or outpatient-based gynecologic diagnostic care.

Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find guidance on the clinical context for using this code, typical sites of service, common modifiers that may apply, and how this procedure fits into typical gynecologic diagnostic workflows. The publication summarizes benchmarks and payment policy considerations where available and highlights documentation elements that align with national billing and coding expectations. It also provides pointers to related procedural codes and coding scenarios to help clarify when 57105 is the appropriate code to report.

Data not available in the input for detailed payer-specific rates, associated taxonomies, and ICD-10 diagnosis pairings.

Billing Code Overview

CPT code 57105 describes an encounter in which the provider evaluates a large lesion or cyst on the vaginal mucosa and performs a biopsy. This procedure is a diagnostic surgical service focused on tissue sampling to establish histologic diagnosis.

Service type: Biopsy with evaluation of a large vaginal mucosal lesion or cyst
Typical site of service: Ambulatory surgical center, hospital outpatient department, or office-based gynecologic procedure setting

Clinical Context

A 38-year-old female presents to an outpatient gynecology clinic with a 2-week history of a palpable, enlarging, painless vulvovaginal mass and intermittent spotting. On speculum and bimanual exam the clinician identifies a 2.5 cm fluctuant lesion on the lateral vaginal mucosa suspicious for a Bartholin gland cyst or mucous retention cyst. After counseling on options and obtaining informed consent, the provider prepares for a biopsy to establish tissue diagnosis. The patient is positioned in lithotomy, the lesion is prepped and draped, local anesthetic (e.g., 1% lidocaine with epinephrine) is infiltrated, and the provider excises or incises the lesion and obtains representative tissue for histopathology. Hemostasis is achieved with electrocautery or suture, and the specimen is submitted with appropriate labeling and a pathology requisition. Post-procedure instructions are given and follow-up arranged for pathology review and wound check.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when billing only the physician component and technical services were billed separately by another entity.
`52`	Reduced services	Use when the biopsy was partially reduced in scope (for example, limited sampling due to anatomic constraints).

Taxonomy Code	Specialty	Notes
207Q00000X	Obstetrics & Gynecology	Gynecologists commonly perform vaginal lesion evaluation and biopsy.
2080P0208X	Gynecologic Oncology	Gynecologic oncologists perform biopsies when malignancy is suspected or for complex lesions.
207R00000X	Family Medicine	Family physicians with procedural skills may perform office-based vaginal biopsies.
363L00000X	Nurse Practitioner	Women’s health nurse practitioners may perform and bill for vaginal lesion biopsies under appropriate state scope.
363A00000X	Physician Assistant	Physician assistants frequently assist or perform biopsies under supervising physician arrangements.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`N75.0`	Acute Bartholin cyst abscess	Bartholin gland cysts/abscesses present as vulvovaginal masses requiring evaluation and sometimes biopsy to rule out other pathology.
`N75.1`	Chronic or recurrent Bartholin cyst	Chronic lesions may be biopsied if atypical features or failure of standard therapy occur.
`N89.8`	Other specified noninflammatory disorders of vagina	Includes mucosal cysts or benign lesions of the vagina that may need tissue diagnosis.
`R22.2`	Localized swelling, mass and lump, genital region	General symptom code used when a vaginal mass is the presenting problem leading to biopsy.
`C52.9`	Malignant neoplasm of vulva, unspecified	Suspicious or atypical vaginal/vulvar lesions may prompt biopsy to exclude malignancy; use with site-appropriate malignant codes if confirmed.
`N76.0`	Acute vaginitis	Inflammatory conditions may mimic lesions; biopsy is less common but considered when diagnosis is unclear.
`D48.6`	Neoplasm of uncertain behavior of female genital organs	Used when pathology is indeterminate and biopsy is required to characterize the lesion.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`57100`	Excision or destruction of vaginal lesion(s), single or multiple, benign lesions	May be used when the clinician performs excision rather than biopsy or when definitive excision is performed at the same encounter.
`11102`	Tangential biopsy of skin (eg, shave, scoop, saucer), single lesion	Related for superficial mucosal shave-type biopsies when a tangential sampling technique is used on a small vaginal mucosal lesion.
`11104`	Tangential biopsy of skin, 2 to 4 lesions	Use when multiple superficial biopsies of separate vaginal lesions are performed.
`11100`	Biopsy of skin, single lesion (punch)	Analogous when a punch biopsy technique is used on a vaginal mucosal lesion; technique-specific code selection depends on provider preference and payer guidance.
`40490`	Biopsy of lip and oral mucosa; incisional	Included as a procedural analogue for mucosal incisional biopsy technique and specimen handling considerations.

OpenPayer

Summary & Overview

CPT 57105: Evaluation and Biopsy of Large Vaginal Lesion