IONM Frequently Asked Questions

What is IONM?

IONM uses state-of-the-art monitoring equipment in order to evaluate the multiple functions of the spinal cord and nerves during surgery. IONM is also referred to as intraoperative neurophysiological monitoring or intraoperative neuromonitoring. The role of IONM is to provide the surgeon with immediate feedback and warning before nerve injury has occurred. IONM has been proven to increase patient safety and improve outcomes in surgical procedures.

Why is IONM Valuable?

IONM offers valuable information and has become the gold standard of patient care regarding spine, brain, vascular, and ENT surgeries. In recent years, the number of IONM cases has grown exponentially as a result of advances in IONM systems, improved monitoring procedures, and the surgeons’ increased awareness about the benefits of intraoperative neuromonitoring (IONM). INN services offer significant benefits to the patient, surgeon, and hospital.

What Happens During My Surgery?

During your surgery, electrodes ranging from sticky pads to small needles will be placed on areas of the body that could possibly be affected by the surgery. Areas of the body can range from the limbs, torso, head, and face. The small needles are NOT placed while awake, they are placed when you are asleep. Baseline recordings are taken before surgery begins and are repeated throughout the procedure. When your Surgical Neurophysiologist sees a change in the signal on their screen, the surgeon is notified and can take appropriate action to prevent a nerve injury. All electrodes and/or small needles are removed before you leave the operating room.

Is There a Risk of Infection?

There is minimal risk of infection. Your skin will be disinfected before needles are placed (needles are sterile and disposed of after every single use). Mild soreness following surgery may be experienced where the small needles were placed.

How am I Billed for IONM Services?

When being billed for IONM services, you may receive an Explanation of Benefits (EOB) from your insurance company that details our charges, their allowances, and payments. In most cases, your insurance company will pay us directly. However, in the case they pay you, or in the cases of deductible or co-insurances, we will bill you directly for reimbursement. For more information or to contact our Billing Department, please email

For you convenience, you may submit payments online using the InstaMed Patient Payment Portal.

Accredited by The Joint Commission in Ambulatory Care

What is our High-Performance Difference?

Through our tightly integrated, comprehensive neuroscience service offerings, innovation, and highly skilled technologists, we are able to provide the highest quality services for our customers and ultimately the patients we serve. Learn more about INN’s High-Performance Difference in Neuroscience by clicking the button below.