What does infusion mean in medical coding. Infusion is commonly used to deliver medication, fluids, or nutrients directly into the bloodstream to treat a variety of conditions such as cancer, infections, dehydration, or other medical issues where oral medication or fluids are not possible or effective. Medical billing for intravenous infusions is not an exception. A pump that can be adjusted as necessary controls the infusion rate. Depending on the particular medication being administered and the patient's reaction to the treatment, infusion operations might last anywhere from a few minutes to several hours.
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