Summary & Overview
CPT 65436: Corneal Epithelial Removal by Chemical Chelation
CPT code 65436 denotes a corneal epithelial removal procedure using a chelating agent (for example, EDTA) to debride injured or damaged corneal epithelium. Nationally, this code represents a specific ophthalmic therapeutic procedure performed in outpatient settings and is relevant for ophthalmologists, ambulatory surgical centers, and payers managing ocular surface disease care. Accurate coding affects clinical documentation, claims processing, and reimbursement for corneal surface interventions.
Key payers included in the scope are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for this procedure, the typical site of service, and which payers commonly cover or adjudicate claims for similar ophthalmic procedures. The publication summarizes common billing considerations, payer coverage patterns, and benchmarking references where available. It also highlights operational factors important for coding and claims submission, and outlines areas where additional policy clarification or clinical documentation often arises. Data not available in the input is noted where specific payer policies, associated taxonomies, ICD-10 diagnoses, and related codes would otherwise be detailed.
Billing Code Overview
CPT code 65436 describes a corneal chelation procedure in which the provider removes the corneal epithelium by applying a chelating agent such as EDTA (ethylenediaminetetraacetic acid) to remove an injured or damaged epithelial layer from the cornea. This procedure is performed to treat corneal surface pathology where chelation aids in loosening and removing compromised epithelial tissue.
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Service type: Ophthalmic corneal surface procedure using chemical chelation
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Typical site of service: Ambulatory surgical center or ophthalmology outpatient clinic
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult presenting to an ophthalmology clinic with a localized, adherent, or degenerative corneal epithelial pathology such as a recurrent corneal erosion, calcific band keratopathy, or an irregular, damaged epithelial layer causing pain and visual disturbance. After history and slit-lamp examination confirm an injured or pathologic epithelial surface amenable to chelation, the provider discusses the procedure, obtains consent, and documents indications and alternatives. The patient is placed in a procedure chair or minor procedure room in the ambulatory surgical center or ophthalmology clinic. Topical anesthetic is instilled, and the corneal epithelium is loosened and removed by applying a chelating agent such as EDTA to debride and dissolve calcium deposits or damaged epithelium. The ocular surface is irrigated, topical antibiotic and anti-inflammatory medications are applied, and a bandage contact lens or patch may be placed. Post-procedure instructions and follow-up are documented, including expected healing timeline and signs of infection. Typical sites of service are the ophthalmology clinic procedure room or ambulatory surgical center; the service type is an ophthalmic minor surgical procedure performed under topical anesthesia.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when reporting only the physician's professional interpretation component if a separate technical component exists for diagnostic testing associated with the procedure. |