02B74ZK
Excision Atrium, Left to Left Atrial Appendage with No Device, Percutaneous Endoscopic Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | 2 Heart and Great Vessels |
| Operation | B Excision |
| Body Part | 7 Atrium, Left |
| Approach | 4 Percutaneous Endoscopic |
| Device | Z No Device |
| Qualifier | K Left Atrial Appendage |
Operation Definition
Cutting out or off, without replacement, a portion of a body part
Procedure Overview
Excision procedures cut out and remove a portion of a heart structure or great vessel without replacing it with anything else. Only part of the body part is taken, distinguishing it from more extensive removal of an entire structure. This might involve removing a segment of diseased tissue, a small mass, or an abnormal growth from within a heart chamber or vessel wall.
Surgeons perform these procedures for reasons ranging from removing a tumor such as a myxoma, to taking a tissue sample for biopsy, to trimming away scarred or damaged tissue that is affecting heart function. Because only a portion of the structure is removed, the underlying body part continues to exist afterward, just in an altered or reduced form.
Anatomy & Axis Detail
Atrium, Left
The left atrium sits posteriorly in the chest, receiving oxygenated blood from the pulmonary veins, and its relative surgical inaccessibility compared to the right atrium means it is typically approached through the interatrial septum or directly during open-heart procedures. Excision of tissue from this chamber most often involves removal of a myxoma, which arises here more frequently than in any other cardiac chamber, or resection of atrial wall affected by endocarditis or fibrosis contributing to arrhythmia. Because the left atrium is thin-walled and adjacent to the pulmonary veins and mitral valve apparatus, careful hemostasis and attention to venous return are essential during tissue removal. The documentation should clarify whether the excised material originated from the atrial wall itself, the septum, or an appendage, since each maps to a distinct body part value.
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.
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 need operative documentation confirming that only part of the body part was removed and that nothing was excised in its entirety, since removal of an entire body part changes the root operation to Resection. Biopsies are a frequent source of confusion: when a sample is taken purely for diagnostic purposes it is still coded as Excision, and the qualifier for diagnostic intent should be applied when documentation supports it. A common error is coding Excision when the surgeon actually removed the entire structure, such as an entire appendage or vessel segment between two anatomic landmarks, which instead requires Resection; another is missing that tissue removed as an inherent part of a more extensive procedure, like debris cleared during a bypass, is not separately coded.