Summary & Overview
CPT 65430: Corneal Smear or Culture, Specimen Collection
CPT code 65430 designates corneal scraping to obtain a smear or culture for diagnostic evaluation of corneal disease. This procedure is clinically important for identifying infectious organisms and guiding targeted therapy in suspected microbial keratitis, corneal ulcers, and other surface infections. Timely and accurate specimen collection can affect clinical outcomes and antimicrobial stewardship on a national level.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The publication outlines coverage considerations and benchmarking context across these major payers and Medicare, noting typical sites of service such as office visits, outpatient clinics, and ambulatory surgery centers where ophthalmic diagnostic sampling is performed.
Readers will gain a concise clinical and billing overview of CPT code 65430, including the procedural intent, service setting, and payer landscape. The piece highlights common reimbursement and coding themes relevant to corneal specimen collection, provides benchmarking context where available, and summarizes policy and documentation factors that typically influence coverage and claim adjudication. Data not provided in the input are noted as unavailable, and the focus remains on clinical characterization and payer coverage scope rather than treatment guidance.
Billing Code Overview
CPT code 65430 describes a procedure in which the provider scrapes the cornea to collect a smear or culture for diagnostic purposes. This is a diagnostic ocular procedure performed to obtain specimens for microbiologic or cytologic evaluation when corneal infection, ulceration, or other surface pathology is suspected.
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Service type: Diagnostic corneal specimen collection (smear or culture)
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Typical site of service: Office, outpatient clinic, or ambulatory surgery center where ophthalmic diagnostic maneuvers are performed
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 45-year-old patient presents to an ophthalmology clinic with acute onset severe eye pain, photophobia, decreased vision, and a corneal epithelial defect with an overlying infiltrate on slit-lamp exam. The ophthalmologist suspects infectious keratitis (bacterial, fungal, or Acanthamoeba) and performs a corneal scraping to obtain material for Gram stain, KOH/wet mount, and culture. The procedure is performed at the slit lamp in an outpatient ophthalmology office or ambulatory surgical center after topical anesthetic is applied. The workflow includes informed consent, topical anesthesia (e.g., proparacaine), sterile technique with a spatula or scalpel blade to obtain epithelial and stromal material, placement of specimens on slides and into culture media, and documentation of indications, findings, and specimens sent. Specimen handling and laboratory requisition are completed contemporaneously, and the provider documents the medical necessity and procedure details in the chart.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable E/M service on the same day | Use when a distinct evaluation and management visit is provided on the same day as the corneal scraping. |
52 | Reduced services |