What is the InterX device and InterX therapy?The InterX device is a hand-held, 9 volt battery operated electrical device that uses an advanced technology called Interactive Neurostimulation. Unlike conventional neurostimulation, the impulses entering the body from the InterX device adjust dynamically as the device encounters changes in the tissue in contact with its electrodes. Hence the InterX is a truly interactive device.
Treatment of a patient with an InterX product is often referred to as InterX therapy.

The InterX products are effective for:
- Acute and chronic pain relief and the resulting increase in range of motion
- Neuropathic and nociceptive pain
- Reducing rehabilitation times from sports injuries and other acute trauma
- Muscle relaxation, reducing muscle cramps and spasms
- Enhancing neuromuscular re-education
Is the device safe, are there any known side-effects and/or contraindications?InterX therapy is a safe, non-invasive treatment that can be used on patients of all ages. Patients should consult their physician regarding the InterX treatment approach that is best for an individual medical condition.
To NRG's knowledge, there have been no reported cases of severe injury due to the use of the InterX products. However, caution should be taken when using neurostimulation devices as they may interfere with other electrical medical products.
How do I use InterX products with my patients?The InterX products are an attended therapy. Typical treatments last from 15 – 30 minutes and the procedure will involve applying the hand-held device or it’s remote probes directly to the skin. Treatment will be on the skin of the involved area, and often non-involved areas on the opposite side of the body or the back.
The number of treatments needed will depend upon the severity of the condition and how long the patient has had the problem. Quite often patient’s feel relief after 1 – 3 treatments but complex long standing conditions may require more effort.
InterX products can be applied independently as a full treatment or concurrently with existing therapy (physical or occupational) activities to meet and enhance therapy goals. The number of visits and duration of treatment is highly dependent upon the complexity of the patient’s medical history and condition, and whether the InterX products is used independently or as a concurrent treatment. Case examples:
- Acute minor ankle sprain may only require one 15-minute session for a healthy individual when InterX therapy is applied as a concurrent treatment to active therapy.
- Chronic low back pain and a complicated medical history may experience a 30-minute treatment and require 3-4 treatments per week for 2-3 weeks
- Post-operative ACL repair may experience a 15-minute InterX treatment multiple times before each physical therapy session.
Once therapy has begun, it is important for patients to complete the full, recommended treatment course in order to experience optimum relief from symptoms. Neurostimulation activates a physical response, which may increase the sensation of pain for a few hours. Adherence to the full course of treatment will minimize symptoms that a patient may experience during the natural healing process.
Is there reimbursement for the treatment?InterX therapy is an attended treatment to reduce pain and more quickly achieve therapy goals. Typically, the InterX product can be used as an adjunctive therapy to routine physical or occupational therapies. Based upon how the InterX product is incorporated into the plan of patient care, InterX therapy may be billed in multiple ways. CPT codes available for use include 97001, 97002, 97003, 97004, 97032, 97110, 97112, 97140, 97530 and 97535.
The InterX product can be applied as an independent therapy to reduce pain and improve quality of life for patients suffering from chronic conditions (RSD, spondylosis, osteoarthritis). Use of the InterX product is as a primary modality can be billed as a distinct therapy, depending upon the specific practice of the treating clinic.
*Disclaimer
NRG is providing reimbursement content for informational purposes only. It is the responsibility of the provider of InterX therapy to comply with proper coding procedures. NRG will bear no responsibility or liability for the results or consequences of the above information with regard to Medicare or other third-party payors.