© Copyright 2026 American Medical Association. All rights reserved.
Fetal magnetocardiography (FMCG) is a sophisticated, non-invasive diagnostic technique designed to capture and record the subtle magnetic fields generated by the electrical activity of a fetus's heart. This procedure is particularly valuable during the second and third trimesters of pregnancy, as well as during labor, as it provides critical insights into fetal well-being. FMCG allows healthcare professionals to monitor various aspects of fetal health, including fetal movement, heart rate, and the presence or absence of cardiac arrhythmias or congenital cardiac diseases. The process involves the placement of a pair of electrodes on the maternal abdomen, with a third electrode positioned on the maternal chest. This setup enables the simultaneous recording of both fetal and maternal cardiac data, which are then separated for detailed analysis. The CPT® Code 0475T specifically encompasses the comprehensive aspects of FMCG, including patient recording and storage, data scanning with signal extraction, technical analysis, and the subsequent supervision, review, and interpretation of the results by a physician or other qualified healthcare professional. This code is essential for accurately documenting the full scope of the FMCG procedure, ensuring that all components of the service are recognized and reimbursed appropriately.
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