Summary & Overview
CPT 66630: Iridectomy with Radial Section for Glaucoma
CPT code 66630 describes an anterior segment ophthalmic surgical procedure in which a complete radial section of the iris is removed by creating a hole from the papillary margin to the iris root. Used in the surgical management of glaucoma, this iridectomy procedure can relieve pupillary block and improve aqueous humor outflow. Nationally, accurate coding for operative ophthalmology procedures like 66630 affects clinical documentation, surgical registries, and procedural reporting for payers and Medicare.
Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, and the scope of coding practice for an anterior segment iridectomy. The publication highlights benchmarks and coding considerations relevant to facility and professional billing, discusses common modifier usage where available, and summarizes policy and reimbursement factors that typically influence claims adjudication for operative ophthalmic services.
This summary is intended to orient clinicians, coders, and policy analysts to the clinical purpose of CPT code 66630, the expected care setting, and the areas where payers and Medicare commonly focus during review of ophthalmic surgical claims. Data not available in the input are noted where relevant.
Billing Code Overview
CPT code 66630 describes a surgical procedure in which the provider removes a complete radial section of the iris by creating a hole from the papillary margin to the root of the iris. The procedure is performed as a treatment for glaucoma when creating an iris aperture is clinically indicated to improve aqueous outflow or relieve pupillary block.
Service type: Operative ophthalmic procedure (anterior segment surgery)
Typical site of service: Hospital operating room or ambulatory surgery center
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is an older adult with symptomatic angle-closure glaucoma or a secondary pupillary block causing elevated intraocular pressure unresponsive to medical therapy. The patient presents to an ophthalmology ambulatory surgical center or hospital eye clinic with complaints of eye pain, blurred vision, headache, or nausea and demonstrates corneal edema and markedly elevated intraocular pressure on exam. After initial medical management (topical and/or oral pressure-lowering agents), the ophthalmologist performs a surgical peripheral iridectomy/iridotomy by creating a full-thickness radial section of the iris from the pupillary margin to the iris root to re-establish aqueous flow and relieve pupillary block.
The clinical workflow includes preoperative evaluation (history, visual acuity, slit-lamp exam, gonioscopy, IOP measurement, and informed consent), perioperative topical and/or local anesthesia, the surgical iridectomy (procedure coded by 66630), immediate postoperative IOP check, application of postoperative topical steroids and cycloplegics as indicated, and short-term follow-up within days to weeks to monitor IOP, inflammation, and visual recovery. Typical sites of service are the ambulatory surgery center (ASC), hospital outpatient department, or a specialty ophthalmology clinic equipped for minor intraocular procedures.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 |