CPT code 34421 defines a surgical thrombectomy via a leg incision to remove clot from the vena cava, iliac, and/or femoropopliteal veins, with or without catheter assistance. This code captures a high-acuity vascular surgical procedure used to restore venous patency in patients with extensive deep venous thrombosis. Nationally, accurate use of this code matters for appropriate surgical documentation, facility and professional payment classification, and tracking of complex venous interventions.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the clinical intent of the service, typical site-of-service expectations, and the common payer landscape for this type of vascular surgery. The publication also outlines relevant benchmarks and policy developments affecting billing and coverage for major venous thrombectomy procedures, plus clinical context on indications and procedural scope. Policy updates and payer-specific coverage nuances are summarized to inform coding accuracy and billing workflows.

Where input data were incomplete, the publication notes missing elements and focuses on available procedural description and payer coverage. The goal is to clarify billing semantics, support correct code selection for complex venous thrombectomy, and summarize the payer environment for this high-complexity surgical service.