Summary & Overview
CPT 34520: Venous Anastomosis with Division and Attachment
CPT code 34520 denotes a surgical venous procedure in which incisions are made over two veins, one vein is divided, and it is attached to the other to alter venous flow. This code identifies a focused operative vascular intervention with implications for surgical resource use, perioperative care, and hospital or ambulatory surgery center billing. Nationally, accurate coding of this procedure supports appropriate reimbursement, quality measurement, and aggregate reporting for vascular surgical services.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for when CPT code 34520 is used, typical sites of service, and the relevant billing modifiers commonly applied to procedural claims. The publication provides benchmarks and coding guidance essentials relevant to hospital and ambulatory surgical settings, outlines common payer considerations, and highlights documentation elements tied to surgical venous reconstruction.
The content is intended to help coding professionals, revenue cycle staff, and clinical leaders understand the purpose and billing context for CPT code 34520, including service definitions, payer scope, and operational implications. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 34520 describes a surgical venous procedure in which the provider makes incisions over two veins, divides one vein, and attaches it to the other. This procedure involves direct operative manipulation of veins to reconfigure venous flow.
-
Service type: Surgical venous reconstruction / venous anastomosis
-
Typical site of service: Operating room or surgical suite in an acute care hospital or ambulatory surgery center
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult presenting with symptomatic unilateral lower extremity venous insufficiency and symptomatic varicosities where surgical correction is indicated after conservative management fails. The patient reports chronic aching, swelling, and recurrent superficial thrombophlebitis localized to a segmental superficial vein. Duplex ultrasound identifies two contiguous superficial veins, one of which is incompetent and causing reflux; the plan is a limited open phlebectomy with venous ligation and anastomosis. The procedure involves making small incisions over the two involved veins, dividing the diseased vein, and attaching it to the adjacent healthy vein to restore outflow or permit ligation proximal to tributary reflux. Typical workflow: preoperative evaluation with history, focused vascular exam, and venous duplex; informed consent documenting risks (bleeding, infection, nerve injury); procedure performed in an ambulatory surgery center or hospital operating room under local with sedation or regional/general anesthesia depending on patient factors; intraoperative marking and sterile preparation; targeted incisions, division of the diseased vein, and surgical anastomosis or ligation to the adjacent vein; hemostasis and wound closure; postoperative instructions including compression therapy and limb elevation; follow-up duplex and wound check within 1–2 weeks.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Not a valid modifier for CMS reporting (placeholder) | Not used for billing — present in source list but not applied clinically |