05754DZ
Dilation Subclavian Vein, Right to No Qualifier with Intraluminal Device, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 5 Upper Veins |
| Operation | 7 Dilation |
| Body Part | 5 Subclavian Vein, Right |
| Approach | 4 Percutaneous Endoscopic |
| Device | D Intraluminal Device |
| Qualifier | Z No Qualifier |
Operation Definition
Expanding an orifice or the lumen of a tubular body part
Procedure Overview
Dilation procedures widen a narrowed segment of an upper vein, most commonly the subclavian vein, innominate vein, or superior vena cava, to restore normal blood flow. A balloon catheter is typically threaded to the narrowed area and inflated to stretch the vessel open, sometimes followed by placement of a stent to help keep the vein patent afterward. This is a frequent treatment for central venous stenosis that develops from scarring around indwelling catheters, pacemaker or defibrillator leads, or dialysis access lines.
Relieving the narrowing restores flow toward the heart and resolves symptoms such as arm or facial swelling, and in dialysis patients it is essential for keeping an arm fistula or graft functioning properly. The vein itself is preserved and reopened rather than bypassed or replaced.
Anatomy & Axis Detail
Subclavian Vein, Right
The right subclavian vein arches over the first rib beneath the clavicle, receiving drainage from the arm via the axillary vein and serving as a common site for central venous catheter and dialysis access placement, which makes it prone to intimal scarring and stenosis over time. Dilation opens such narrowed segments using balloon angioplasty introduced through a percutaneous catheter, relieving arm swelling, catheter dysfunction, or symptoms of thoracic outlet-related venous compression. Because the vein runs in close proximity to the subclavian artery, brachial plexus, and apex of the lung, catheter-based access is favored over open exposure whenever feasible. The procedure is frequently repeated in patients with chronic hemodialysis access, and coding should note whether an intraluminal stent was deployed alongside the balloon.
Approach: Percutaneous Endoscopic
Percutaneous Endoscopic combines a puncture through skin or mucous membrane with insertion of an endoscope to visualize the procedure internally, as in laparoscopic cholecystectomy. It is distinguished from plain Percutaneous by the presence of scope-guided visualization, and from Via Natural or Artificial Opening Endoscopic by its route being a new puncture rather than an existing orifice or stoma.
Device: Intraluminal Device
Intraluminal Device denotes a single device, such as a stent or occlusion device, positioned within the lumen of a tubular body part like a vessel, duct, or airway to maintain patency or occlude flow. It carries no drug coating or radioactivity, distinguishing it from the drug-eluting, radioactive, and bioactive intraluminal device values, and from Extraluminal Device, which sits outside rather than inside the lumen.
Coding & Documentation
Coders assign Dilation based on documentation that a balloon or similar device stretched open a narrowed venous segment, with the device value reflecting whether an intraluminal device such as a stent was left in place after the balloon was withdrawn. The specific vein treated must be identified precisely, since central venous anatomy in this body system has distinct body part values for the subclavian, innominate, and superior vena cava. A common mistake is failing to code a separately documented stent placement with the correct device value, or confusing simple balloon angioplasty with a bypass when a stent is described as creating a channel; a stent within the native vein is still Dilation, not Bypass.