Summary & Overview
CPT 66740: Ciliary Body Separation to Reduce Intraocular Pressure
CPT code 66740 represents a surgical ophthalmology procedure that involves partial separation of the ciliary body to decrease aqueous humor production and reduce intraocular pressure. This procedure is clinically significant as a treatment option for glaucoma or other conditions leading to ocular hypertension; it is performed in operative settings such as hospital operating rooms or ambulatory surgical centers and can influence clinical pathways for patients with refractory intraocular pressure.
Key payers included in the analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a national overview of how CPT code 66740 is classified, the clinical intent of the service, and contextual information useful for coding and claims processing. The publication outlines benchmarks and typical site-of-service considerations, summarizes common billing modifiers when available, and highlights clinical context relevant to preauthorization and documentation. Where input data is missing, the text notes that information is not available.
This summary is intended for clinical coders, revenue cycle staff, and policy analysts seeking a concise reference to the procedure's purpose, service setting, and the major payers relevant to nationwide billing and coverage discussions.
Billing Code Overview
CPT code 66740 describes a surgical procedure in which the provider separates part of the ciliary body to reduce aqueous humor production and thereby lower intraocular pressure. The procedure is an ophthalmic surgical intervention aimed at managing elevated intraocular pressure associated with glaucoma.
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Service type: Surgical ophthalmology procedure to decrease aqueous fluid production
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Typical site of service: Hospital operating room or ambulatory surgical center
Data not available in the input for associated taxonomies, ICD-10 diagnoses, and related codes.
Clinical & Coding Specifications
Clinical Context
A 68-year-old patient with a history of primary open-angle glaucoma has progressive optic nerve damage and uncontrolled intraocular pressure despite maximum tolerated topical and oral medical therapy. The ophthalmologist discusses surgical options and schedules a cyclodestructive procedure to reduce aqueous humor production by partially separating the ciliary body. The procedure is performed in an ambulatory surgery center or hospital outpatient department with monitored anesthesia care or local retrobulbar block. Preoperative workflow includes review of medications (anticoagulants), informed consent, marking of the operative eye, and baseline visual acuity and intraocular pressure measurements. Intraoperative steps include anesthesia, conjunctival or transscleral exposure as appropriate, application of the cyclodestructive technique (e.g., cyclocryotherapy, transscleral cyclophotocoagulation, or endocyclophotocoagulation) to ablate ciliary processes, hemostasis, and ocular surface closure. Postoperative workflow includes intraocular pressure checks, topical steroid and antibiotic regimen, pain control, and short-term follow-up within 24–72 hours to assess inflammation and pressure response, with subsequent visits to titrate glaucoma medications and monitor for complications such as hypotony or inflammation.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
11 | Return to the Operating Room | When the surgeon performs an additional intraoperative procedure during the same operative session requiring a separate billing indication for a return to OR scenario. |