Your ANS has two parts

There are two parts, or branches, to your ANS: the sympathetic branch and the parasympathetic branch. Generally, the sympathetic branch is more in control when you are stressed, ill, or injured, while the parasympathetic branch is more in control when you are relaxing, sleeping, or recovering from an illness or injury. A balance between the two branches of your ANS is essential for good health. In fact, most illnesses and injuries cause or result from an imbalance between these two branches. An imbalance in your ANS can tell your doctor many things about how healthy you are as well as what can be done to keep you as healthy as possible.

What is ANS monitoring?

ANS monitoring is a fast, non-invasive, and simple way to provide your doctor with information to help him or her determine how healthy you are. Monitoring your ANS, when measured frequently like your blood pressure and heart rate, can help your doctor keep you healthy. Information is collected from an easy, painless test that can be done in your doctor's office or in a hospital. Your physician then interprets your results produced by the ANSiscope.

What is heart rate variability?

Heart rate variability (HRV) is a measure of your heart's ability to quickly respond to changes in your level of activity. Moderate variability is healthy. Too much or too little is unhealthy. ANS monitoring can provide your doctor with information that cannot be seen using other measures, e.g. on an ECG recording.

Are these measurements reimbursable? YES

The measurements of the ANS are reimbursable in the US under the CPT Codes 95921 and 95922.