CPT 68100 Conjunctival Biopsy Reimbursement | OpenPayer

Summary & Overview

CPT 68100: Conjunctival Biopsy for Diagnostic Evaluation

CPT code 68100 represents a conjunctival biopsy, a diagnostic surgical procedure to obtain conjunctival tissue for histologic or cytologic evaluation. This code is relevant nationally for ophthalmology practices, ambulatory surgical centers, and hospital outpatient departments because conjunctival biopsy can be essential for diagnosing inflammatory, infectious, and neoplastic conditions of the ocular surface.

Key payers in the scope of national reimbursement and policy discussion include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for use of the code, typical settings where the procedure is performed, and the payer landscape addressed in the publication. The analysis highlights common billing considerations, coding and documentation touchpoints, and benchmark metrics where available. Policy updates and payer-specific coverage nuances affecting prior authorization and claim adjudication are summarized to inform billing staff and revenue-cycle stakeholders.

The report is written for a national audience and focuses on practical information for billing, clinical teams, and policy analysts seeking concise guidance on the role and billing context of CPT code 68100. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 68100conjunctival biopsyophthalmologydiagnostic procedureoutpatient surgerybiopsy codingocular surface pathologyprocedure coding

Billing Code Overview

CPT code 68100 describes a biopsy of the conjunctiva performed for diagnostic purposes. The procedure involves obtaining tissue from the conjunctival lining of the eye to establish or clarify a diagnosis.

Service type: Diagnostic surgical biopsy
Typical site of service: Ophthalmology clinic, ambulatory surgical center, or hospital outpatient department

Clinical & Coding Specifications

Clinical Context

A 62-year-old patient presents to the ophthalmology clinic with a persistent, elevated, erythematous conjunctival lesion on the bulbar conjunctiva of the right eye that has failed topical therapy and is clinically suspicious for neoplasia. After slit-lamp examination and topical anesthetic, the ophthalmologist performs a conjunctival biopsy under local anesthesia in an outpatient procedure room to obtain tissue for histopathology and microbiology. The clinical workflow includes informed consent, topical anesthesia (and possible subconjunctival injection), sterile preparation, excision or incisional biopsy of the conjunctiva, hemostasis, specimen labeling and submission to pathology, and placement of a topical antibiotic/anti-inflammatory and protective patch. The specimen is sent with a pathology requisition citing the referring diagnosis and relevant clinical history. Typical sites of service are the ophthalmology clinic or hospital outpatient department for a diagnostic (biopsy) procedure. The service type is an operative/diagnostic ophthalmic procedure for tissue diagnosis.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services	Use when the biopsy requires substantially greater work than usual (extensive dissection, difficult exposure) documented in the operative note.
`23`

CPT 68115: Excision of Conjunctival Lesion >1 cm

CPT-68130-CONJUNCTIVAL-SCLERAL-LESION-EXCISION

CPT 68130: Conjunctival and Scleral Lesion Excision

CPT-68110-CONJUNCTIVAL-LESION-EXCISION-UP-TO-1CM

CPT 68110: Excision of Conjunctival Lesion up to 1 cm

CPT-68135-CONJUNCTIVAL-LESION-ERADICATION-OPHTHALMIC-SURGERY

CPT 68135: Conjunctival Lesion Eradication to Relieve Pain and Improve Vision

Taxonomy Code	Specialty	Notes
207W00000X	Ophthalmology	Primary specialty performing conjunctival biopsy.
207RX0006X	Oculoplastic Surgery	Subspecialists who may perform biopsies for periocular-conjunctival lesions.
2080P0208X	Pathology	Pathologists receive and interpret conjunctival biopsy specimens; includes anatomic pathology.
207L00000X	Optometry	May perform limited procedures in some states; typically not the primary biopsy provider but involved in diagnosis and referral.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`H11.00`	Conjunctival hemorrhage, unspecified	Biopsy may be performed when hemorrhagic lesions are suspicious for underlying pathology or systemic disease.
`H11.39`	Other conjunctival degenerations	Biopsy performed to confirm degenerative versus neoplastic processes.
`H11.22`	Conjunctival nodules	Direct indication for biopsy to determine etiology (inflammatory, infectious, or neoplastic).
`H11.1`	Conjunctival cyst	Excisional biopsy often performed to both treat and diagnose cystic conjunctival lesions.
`D48.7`	Neoplasm of uncertain behavior of eye and adnexa	Used when the lesion is suspicious but histologic behavior is uncertain; biopsy required for diagnosis.
`C69.9`	Malignant neoplasm of eye, unspecified	Biopsy may be performed when there is concern for ocular surface malignancy requiring histologic confirmation.
`H10.9`	Conjunctivitis, unspecified	Persistent or atypical conjunctivitis unresponsive to therapy may prompt biopsy to rule out atypical infection or neoplasia.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`99213`	Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes	Evaluation and decision-making visit preceding the biopsy; documents history, exam, and informed consent.
`67028`	Intravitreal injection of a therapeutic agent (separate code for procedures involving intraocular injection)	Not directly related to conjunctival biopsy but may be performed in the same clinic visit for other ocular conditions; listed as a common concurrent ophthalmic procedure.
`66984`	Cataract extraction with intraocular lens implantation (complex)	Major ophthalmic surgery that may be scheduled separately; listed as an example of a procedure that could be billed on the same day requiring modifier `51` if appropriate.
`88305`	Surgical pathology, gross and microscopic examination, intermediate complexity	Typical pathology code used to report histologic examination of conjunctival biopsy tissue.
`99070`	Supplies and materials (except spectacles) provided by the physician	Use to report additional supplies used during the biopsy if payer allows separate supply charge.

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