02L74DK
Occlusion Atrium, Left to Left Atrial Appendage with Intraluminal Device, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 2 Heart and Great Vessels |
| Operation | L Occlusion |
| Body Part | 7 Atrium, Left |
| Approach | 4 Percutaneous Endoscopic |
| Device | D Intraluminal Device |
| Qualifier | K Left Atrial Appendage |
Operation Definition
Completely closing an orifice or the lumen of a tubular body part
Procedure Overview
Occlusion procedures on the heart and great vessels close off a vessel, chamber opening, or shunt so that blood can no longer pass through it. Surgeons use this approach to seal off a structure that is causing harm rather than to serve a useful purpose, such as an aneurysm, a patent foramen ovale, an atrial appendage prone to clot formation, or an abnormal connection between chambers. The closure can be done with a clip, plug, coil, suture, or occluder device delivered either through open surgery or a catheter threaded from a vessel in the leg or arm.
Patients encounter this family of procedures most often for stroke-prevention strategies, such as left atrial appendage closure in people with atrial fibrillation who cannot tolerate long-term blood thinners, or for closing a hole between heart chambers that never sealed after birth. The goal is always the same: eliminate flow through a specific pathway while leaving the surrounding anatomy otherwise intact.
Anatomy & Axis Detail
Atrium, Left
The left atrium receives oxygenated blood from the pulmonary veins and is the chamber most closely associated with the left atrial appendage, a common source of thrombus formation in atrial fibrillation. Occlusion of the left atrium in ICD-10-PCS most often refers to closure of the left atrial appendage using a clip, plug, or suture-based device to reduce stroke risk without removing the structure, rather than blocking flow through the chamber itself. The procedure may be performed surgically through an open or thoracoscopic approach, or percutaneously with a delivery catheter positioned via transseptal access. Documentation should clarify that the appendage, not the atrial body or its venous inlets, is the structure being closed, since this distinguishes the procedure from occlusion of an atrial septal defect or a pulmonary vein.
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.
Qualifier: Left Atrial Appendage
This qualifier specifies the left atrial appendage as the body part addressed, most often in occlusion or exclusion procedures performed to reduce thromboembolic risk in atrial fibrillation. It is distinguished from the left atrium qualifier, which refers to the chamber proper rather than this small, sac-like outpouching.
Coding & Documentation
Coders assign Occlusion when the operative note describes a structure being completely closed off, not narrowed or partially blocked, which would instead point to Restriction. The documentation needs to specify the device used (occluder, clip, coil) and the approach, since percutaneous catheter-based closures carry a different device and approach value than an open surgical ligation of a vessel. A frequent error is confusing Occlusion with Excision or Destruction when a structure like an atrial appendage is removed or ablated rather than sealed shut - if tissue is taken out, Excision applies instead. Another common mix-up is failing to distinguish a diagnostic occlusion test from a therapeutic one; only the therapeutic closure is coded here.