HCPCS 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

AI EXPLANATION: Autonomic function testing measures how well the nervous system controls involuntary body processes, particularly heart rate and blood pressure regulation. During this outpatient assessment, medical staff record continuous, beat-to-beat changes in blood pressure and heart rhythm while the patient performs breathing techniques like bearing down and rests on a specialized table that tilts upright for several minutes. These activities show how the nervous system responds to changes in posture and breathing effort.