037B35Z
Dilation Radial Artery, Right to No Qualifier with Intraluminal Device, Drug-eluting, Two, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 3 Upper Arteries |
| Operation | 7 Dilation |
| Body Part | B Radial Artery, Right |
| Approach | 3 Percutaneous |
| Device | 5 Intraluminal Device, Drug-eluting, Two |
| Qualifier | Z No Qualifier |
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
Radial Artery, Right
The right radial artery is best known as a common site for arterial catheter access and, increasingly, as the preferred entry point for coronary and peripheral interventions, but it can itself develop stenosis, spasm-related injury, or occlusion from repeated instrumentation. Dilation is used to treat a narrowed segment causing reduced perfusion to the hand or to restore patency after access-related complications, particularly relevant in patients who may need the vessel again for future procedures or for creation of a dialysis fistula. Because the radial artery is smaller and more prone to spasm than proximal arm vessels, operators typically use smaller catheter profiles and vasodilator medication alongside the mechanical dilation to protect the vessel.
Approach: Percutaneous
Percutaneous describes entry by needle or instrument puncture through the skin or mucous membrane to reach the site of the procedure, without cutting the tissue open or using a visualizing scope. It differs from Open in that the site itself is never exposed, and from Percutaneous Endoscopic in that no endoscope is used to see internal structures. Common examples include needle biopsies and injections.
Device: Intraluminal Device, Drug-eluting, Two
This value specifies that exactly two drug-eluting intraluminal devices, such as coronary stents, were deployed within the same body part during one procedure. The device count matters for procedural coding because it reflects added technical complexity compared to a single drug-eluting device, and it is distinguished from the Three and Four or More counts by the specific number placed.
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.