CPT® Code 95943

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Simultaneous, independent, quantitative measures of both parasympathetic function and sympathetic function, based on time-frequency analysis of heart rate variability concurrent with time-frequency analysis of continuous respiratory activity, with mean heart rate and blood pressure measures, during rest, paced (deep) breathing, Valsalva maneuvers, and head-up postural change

The CPT® Code 95943 refers to a specialized diagnostic procedure that evaluates the autonomic nervous system (ANS), which is comprised of two main components: the sympathetic and parasympathetic nervous systems. The sympathetic nervous system is primarily responsible for regulating blood pressure, while the parasympathetic nervous system plays a crucial role in controlling heart rate. This procedure involves the simultaneous and independent quantitative measurement of both branches of the ANS through a sophisticated analysis of heart rate variability (HRV) in conjunction with continuous respiratory activity. The assessment is conducted during various states, including rest, paced (deep) breathing, Valsalva maneuvers, and changes in posture, such as head-up positioning. By utilizing time-frequency analysis, this non-invasive technique provides valuable insights into the functioning of the autonomic nervous system. The test is typically performed with automated equipment, ensuring accuracy and reliability in the measurements obtained. This comprehensive evaluation aids healthcare professionals in understanding the balance and responsiveness of the autonomic nervous system, which is essential for maintaining homeostasis in the body.