03790D1
Dilation Ulnar Artery, Right to Drug-Coated Balloon with Intraluminal Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 3 Upper Arteries |
| Operation | 7 Dilation |
| Body Part | 9 Ulnar Artery, Right |
| Approach | 0 Open |
| Device | D Intraluminal Device |
| Qualifier | 1 Drug-Coated Balloon |
Operation Definition
Expanding an orifice or the lumen of a tubular body part
Procedure Overview
Dilation procedures widen a narrowed or blocked segment of an upper artery, most often through balloon angioplasty with or without stent placement, to restore adequate blood flow to the brain, neck, or arm. Arteries like the carotid, subclavian, and brachial commonly develop narrowing from atherosclerotic plaque, and dilation is one of the least invasive ways to correct it.
A catheter carrying a balloon, and often a stent, is threaded to the narrowed site under imaging guidance; the balloon is inflated to compress the plaque against the vessel wall, and a stent may be left in place to hold the artery open afterward. This is typically attempted before a bypass is considered, since it avoids open surgery and graft material.
Patients undergo this procedure to reduce stroke risk, relieve arm claudication or ischemia, and avoid a more invasive vascular reconstruction, with the artery's own wall preserved rather than replaced or rerouted.
Anatomy & Axis Detail
Ulnar Artery, Right
The right ulnar artery is one of two forearm vessels supplying the hand, running along the medial forearm and forming the larger contribution to the palmar arches in most people, so its patency matters when the radial artery is being used or has been compromised for access elsewhere. Stenosis or thrombosis here can produce hand ischemia, particularly digit-specific coolness or pain, and dilation is used to reopen the vessel and preserve collateral flow to the hand. Because the ulnar artery is smaller in caliber than more proximal arm vessels, catheter and balloon sizing require particular care to avoid vessel injury, and an Allen's test or equivalent perfusion assessment often informs the decision to intervene on this side.
Approach: Open
Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.
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.
Qualifier: Drug-Coated Balloon
A device qualifier indicating that the angioplasty balloon used to dilate a vessel is coated with an antiproliferative drug intended to reduce restenosis, as opposed to a plain balloon. It is distinguished from Sustained Release, which describes a different drug-delivery mechanism, and from drug-eluting stents, which are a separate device category entirely. Its use should match documentation specifically describing a drug-coated or drug-eluting balloon.
Coding & Documentation
Coding a Dilation requires documentation of the artery treated and whether a stent was deployed, since the device value changes between no device, a drug-eluting stent, a non-drug-eluting stent, or an intraluminal device without drug coating. The approach, percutaneous versus open, also affects code selection. A frequent error is failing to capture a stent placed during the same session as a separate consideration, when in fact PCS bundles the stent into the Dilation code's device character rather than coding it separately; another is confusing pre-dilation performed to facilitate stent placement, which is not coded independently, with a therapeutic dilation of a different vessel.