CPT® Code 93224

External electrocardiographic recording up to 48 hours by continuous rhythm recording and storage; includes recording, scanning analysis with report, review and interpretation by a physician or other qualified health care professional

External electrocardiographic recording, identified by CPT® Code 93224, involves the continuous monitoring of a patient's heart rhythm for a duration of up to 48 hours. This procedure utilizes an external device, commonly referred to as a Holter monitor, which is worn by the patient during their normal daily activities. The process begins with the placement of electrodes or leads on the patient's chest, allowing for the capture of the heart's electrical activity. The Holter monitor records this data continuously, producing original electrocardiographic (ECG) waveforms that are stored on a magnetic tape or a digitized medium for subsequent analysis. The primary objective of this procedure is to gather comprehensive rhythm-derived data, which includes critical information such as heart rate, rhythm patterns, ST segment analysis, heart rate variability, and T-wave alternans. After the monitoring period, the patient returns the device to the healthcare provider, where the stored data undergoes a thorough review. This includes visual superimposition scanning, which provides a detailed overview of the entire recording, allowing for the identification of various ECG waveforms and the extraction of selective rhythm strip samples. A physician or qualified healthcare professional then interprets the analyzed data to assess for any potential heart arrhythmias. The complete procedure, encompassing the recording, scanning analysis, and the subsequent review and interpretation, is reported using CPT® Code 93224.