Summary & Overview
CPT 37766: Excision of Varicose Veins (20+ Small Incisions)
CPT code 37766 denotes surgical excision and removal of varicose veins through 20 or more very small incisions, a common phlebectomy technique used to treat multiple superficial venous varicosities. Nationally, this code matters because it captures an often-performed outpatient surgical intervention for symptomatic varicose veins, affecting billing, prior authorization workflows, and facility resource planning.
Key payers in typical analyses include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical context for the procedure, common sites of service, and the kinds of benchmarks and policy elements typically reviewed for this code. These include utilization benchmarks, reimbursement considerations across commercial and public payers, and coding policy updates relevant to outpatient vascular procedures.
This publication provides operationally focused content: what 37766 represents clinically, how it is reported in claims, and the policy touchpoints that influence coverage and payment. It is intended for billing managers, practice administrators, and policy analysts seeking clear, national-level information on coding, service setting implications, and the categories of payer policies that commonly affect phlebectomy services.
Billing Code Overview
CPT code 37766 describes an operative procedure in which the provider excises and removes varicose veins through 20 or more very small incisions. The procedure is a form of surgical vein stripping and phlebectomy performed to remove multiple superficial varicosities.
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Service type: Surgical venous procedure (phlebectomy/varicose vein excision)
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Typical site of service: Ambulatory surgical center or hospital outpatient surgical suite, and may be performed in an office-based surgical setting when infrastructure supports minor surgical procedures.
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Clinical & Coding Specifications
Clinical Context
A 54-year-old ambulatory woman presents to a vascular surgery clinic with symptomatic varicose veins of the lower extremity causing aching, swelling, and recurrent superficial thrombophlebitis despite conservative measures (compression therapy and leg elevation). Duplex ultrasound mapping confirms multiple incompetent superficial veins and tributaries appropriate for phlebectomy. The patient is scheduled for an outpatient ambulatory surgical center visit. Under monitored anesthesia care or local tumescent anesthesia with sedation, the surgeon performs microincision ambulatory phlebectomy, making 20 or more very small stab incisions to excise and remove varicosities. Hemostasis is achieved with direct pressure, and sterile dressings and compression bandaging are applied. Postoperative instructions include activity limitations, wound care, and compression stocking use. Follow-up is arranged in 1–2 weeks for wound check and duplex evaluation as indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when only the physician interpretation/professional service is billed separate from a facility or technical component. |
50 | Bilateral procedure |