Some of the most complex coding in medicine
Vascular surgeons perform open operations, endovascular procedures and venous treatments, and many run office-based labs and vascular ultrasound labs. Endovascular coding depends on exactly where catheters went, which vessels were treated and how — information that must be read from detailed procedure reports. Missed catheter placements or the wrong revascularization hierarchy can change a case’s payment substantially.
Endovascular coding rules
- Catheter placement is coded by vascular family and order — non-selective, then first, second and third order selective — billing the highest order reached in each family, plus additional families when separately entered.
- Lower-extremity revascularization (37220–37235) is coded by territory — iliac, femoral/popliteal, and tibial/peroneal — and by the most intensive treatment in each vessel, following the hierarchy CPT defines for that territory — angioplasty is the least intensive and stent placement with atherectomy the most. Each territory has its own rules for additional vessels.
- Imaging and closure: many endovascular codes include imaging and radiological supervision; diagnostic angiography is billed separately only under specific conditions, such as no prior study or a change in the patient’s condition.
Veins, dialysis access and the vascular lab
| Service | Codes | Watch for |
|---|---|---|
| Endovenous ablation (radiofrequency, laser, adhesive) | 36475–36479, 36482, 36483 | Coverage usually requires symptoms, duplex reflux findings and a period of compression therapy |
| Dialysis circuit interventions | 36901–36909 | Coded by the most intensive service in each segment of the circuit |
| Vascular ultrasound (carotid, arterial, venous) | 93880, 93922–93931, 93970, 93971 | Unilateral or bilateral codes; professional and technical components |
Office-based labs, globals and approvals
When endovascular procedures are performed in the practice’s own office-based lab, the practice bills the global service with an office place of service and is paid for equipment and supplies, which makes accurate supply-heavy coding even more important. Open and many endovascular procedures carry 0-, 10- or 90-day global periods, with modifiers 58, 78 and 79 for staged, complication and unrelated procedures. Most commercial plans require authorization for venous procedures and many arterial interventions — see prior authorization services.