Summary & Overview
CPT 66700: Thermal Destruction of Ciliary Body to Lower Intraocular Pressure
CPT code 66700 represents a surgical ophthalmology procedure that destroys part of the ciliary body using thermal energy to reduce aqueous humor production and lower intraocular pressure. Nationally, this code is relevant for clinicians and payers involved in glaucoma and refractory ocular hypertension management because it corresponds to an interventional approach when medical therapy is insufficient. The procedure is typically performed in ambulatory surgical centers or hospital operating rooms by ophthalmic surgeons.
Key payers in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, typical sites of service, and commonly associated practice workflows. The publication addresses billing considerations, common modifier usage patterns, and reimbursement context where available. It also summarizes clinical indications and how the service fits within glaucoma care pathways.
This report is intended for a national audience of clinicians, coding professionals, and payer policy analysts seeking a focused briefing on CPT code 66700, its clinical purpose, and the billing environment surrounding thermal destruction of the ciliary body. Data not available in the input is indicated where applicable.
Billing Code Overview
CPT code 66700 describes a procedure in which the provider destroys a portion of the ciliary body by applying heat to decrease aqueous humor production and lower intraocular pressure. This procedure is an ophthalmic surgical intervention aimed at reducing fluid generation within the eye to manage elevated intraocular pressure.
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Service type: Surgical ophthalmic procedure to reduce aqueous production
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Typical site of service: Ambulatory surgical center or hospital operating room
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with refractory glaucoma whose intraocular pressure (IOP) remains elevated despite maximally tolerated medical therapy and prior laser or surgical interventions. The ophthalmologist evaluates the patient in an outpatient ophthalmology clinic, documents IOP measurements, optic nerve status, visual field progression, and prior treatments. After informed consent, the patient undergoes a cyclodestructive procedure to destroy a portion of the ciliary body using thermal energy to reduce aqueous humor production and lower IOP. The procedure is commonly performed in an ambulatory surgery center or hospital outpatient department under monitored anesthesia care or local anesthesia with sedation. Post-procedure workflow includes short post-anesthesia recovery, topical and/or systemic intraocular pressure–lowering medications, scheduled follow-up visits for IOP checks, corneal and anterior segment exam, and documentation of any complications such as inflammation, hypotony, or vision changes. Typical documentation includes preoperative diagnosis, indication for cyclodestruction (e.g., uncontrolled glaucoma), technique and energy applied, laterality, anesthesia type, modifiers as applicable, and postoperative instructions and follow-up plan.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing only the physician’s professional work separate from the technical component |