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The CPT® Code 93540 refers to an injection procedure that is performed during a cardiac catheterization specifically for the selective opacification of aortocoronary venous bypass grafts, which may involve one or more coronary arteries. This procedure is essential for visualizing the aortocoronary venous bypass grafts, allowing healthcare professionals to assess the condition and functionality of these grafts. During the procedure, a catheter is carefully positioned within the aortocoronary venous bypass grafts, and contrast media is injected. This contrast agent enhances the visibility of the grafts on imaging studies, enabling the acquisition of angiograms that are separately reportable. The distinction between this code and related codes, such as CPT® Code 93539, lies in the specific focus on venous bypass grafts as opposed to arterial conduits. The clarity provided by this procedure is crucial for diagnosing potential complications or assessing the patency of the grafts used in coronary artery bypass surgery.
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