CPT® Code 95922

Testing of autonomic nervous system function; vasomotor adrenergic innervation (sympathetic adrenergic function), including beat-to-beat blood pressure and R-R interval changes during Valsalva maneuver and at least 5 minutes of passive tilt

The autonomic nervous system (ANS) is a critical component of the human body, responsible for regulating involuntary physiological functions, including heart rate, blood pressure, and digestion. It is divided into two main branches: the sympathetic nervous system, which prepares the body for 'fight or flight' responses, and the parasympathetic nervous system, which promotes 'rest and digest' activities. CPT® Code 95922 specifically pertains to the testing of sympathetic adrenergic function, which is essential for understanding how the body responds to stressors and maintains homeostasis. This procedure evaluates the vasomotor adrenergic innervation, focusing on the body's ability to regulate blood pressure and heart rate in response to specific maneuvers. During the testing, an electrocardiographic (ECG) rhythm strip is utilized to monitor heart rate and R-R intervals, which are critical for assessing the timing between heartbeats. The Valsalva maneuver, a technique that involves forcefully exhaling with the glottis closed, is employed to create changes in intrathoracic pressure, thereby affecting venous return and blood pressure. Additionally, a passive tilt test is conducted, where the patient is positioned on a tilt table to observe the body's response to changes in posture. This comprehensive assessment helps identify any dysfunction in the sympathetic nervous system, which can have significant implications for cardiovascular health and overall autonomic regulation.