Medicare coverage. As of the LCD revision effective January 1, 2024, the Medicare TENS policy (L33802) says "TENS therapy for Chronic Low Back Pain (CLBP) will be denied as not reasonable and necessary." Other plans set their own rules; check with your plan.
What does Medicare say about TENS for back pain?
Medicare does not cover TENS for chronic low back pain. The Medicare TENS policy, local coverage determination (LCD) L33802, says: “TENS therapy for Chronic Low Back Pain (CLBP) will be denied as not reasonable and necessary.” This is the text of the revision effective for services performed on or after January 1, 2024.
The policy also says: “A TENS unit will be denied as not reasonable and necessary for acute pain (less than three months duration) other than for post-operative pain.” So the policy covers neither chronic low back pain nor most short-term back pain. Other plans set their own rules. Medicare Advantage, Medicaid, VA, workers’ compensation and commercial plans may differ, so check with your plan.
| Back pain situation | What the Medicare TENS policy says |
|---|---|
| Chronic low back pain | TENS “will be denied as not reasonable and necessary” |
| Acute pain under three months | Denied, other than post-operative pain |
| Post-operative pain | Coverage limited to 30 days from the day of surgery, as a rental |
| Other plans | Check with your plan |
Learn the term in our glossary entry on chronic low back pain.
Why does Medicare deny TENS for chronic low back pain?
CMS reviewed the evidence and found it inadequate. A CMS transmittal (R149NCD) explains: “In 2010, the Therapeutic and Technology Assessment Subcommittee of the American Academy of Neurology (AAN) published a report finding transcutaneous electrical nerve stimulation (TENS) ineffective for chronic low back pain (CLBP).”
The transmittal then says: “effective for claims with dates of service on or after, June 8, 2012, CMS believes the evidence is inadequate to support coverage of TENS for CLBP as reasonable and necessary.” It allows coverage only for patients enrolled in an approved clinical study. Our post on Medicare and chronic low back pain and the guide on TENS for lower back pain go deeper.
What else might my clinician suggest for back pain?
Your clinician may suggest movement, therapy or other non-drug options. NCCIH reports that “There’s low- or moderate-quality evidence that a variety of mind and body practices, including acupuncture, electromyography biofeedback, low-level laser therapy, mindfulness-based stress reduction, progressive muscle relaxation, spinal manipulation, tai chi, and yoga, may be helpful for chronic low-back pain.” The words “low- or moderate-quality” and “may” set honest limits.
Our blog has general reading on back pain. These posts do not replace advice from your clinician:
For more options to discuss, read our guide on pain management without opioids.
Where do the pads go for back pain?
Your clinician or physical therapist should show you where the pads go. A TENS unit works where the pads are placed. The NHS gives general rules: “Place the sticky pads onto clean skin, near the painful parts of your body. Leave a gap between the pads.”
Two limits apply to the back. The NHS says: “Do not use TENS on your chest and back at the same time.” The University of Iowa Health Care page lists “Directly on your backbone” among the places where you should not use TENS. It also says to place pads on “fleshy areas of the body, not over boney sites.” Our pad placement guide lists more rules. Learn the term lumbar spine in the glossary.
Who should not use a TENS unit for back pain?
Some people should not use a TENS unit at all. The NHS says: “Do not use TENS if: you have epilepsy; you have a pacemaker; you’re pregnant, unless your doctor or midwife tells you to.” The University of Iowa Health Care page says: “Do not use TENS if you have: A cardiac pacemaker or defibrillator” and lists any implanted metallic or electronic device.
Do not use TENS on broken, irritated, infected or numb skin. Do not use it while you sleep, drive or bathe. Follow your clinician’s instructions and your device’s instructions. Read the full list in our TENS unit safety guide.
When should I see a clinician instead of self-treating?
See a clinician if you are not sure what causes your back pain. The NHS says: “If you’re not sure what’s causing your pain, see a healthcare professional before using a TENS machine.” Tell your clinician about any new or sudden change. A TENS unit will not tell you what is wrong.
Next step
Talk with your doctor or physical therapist about your back pain, your plan and your options. To ask AHC about a TENS unit, call (800) 749-1188 or use Contact. You can also read our guide to TENS units.
Questions people ask
Does Medicare cover a TENS unit for chronic low back pain?
No. The Medicare TENS policy (LCD L33802) says TENS therapy for chronic low back pain will be denied as not reasonable and necessary. A national coverage decision effective June 8, 2012 allows coverage only for patients in an approved clinical study. Other plans differ, so check with your plan.
Can I use a TENS unit for acute back pain?
The Medicare TENS policy says a TENS unit will be denied for acute pain of less than three months other than post-operative pain. Other plans differ. Ask your clinician about your pain and your plan before you buy or rent a unit.
Where do the pads go for back pain?
Your clinician or physical therapist should show you. The NHS says to place pads near the painful area with a gap between them, and not on your chest and back at the same time. The University of Iowa says not to use TENS directly on your backbone.
Is a TENS unit safe with a pacemaker?
No. The NHS says not to use TENS if you have a pacemaker. The University of Iowa lists a cardiac pacemaker or defibrillator and any implanted metallic or electronic device. Ask your clinician before you try any unit.
Terms on this page
Sources
- CMS: LCD Transcutaneous Electrical Nerve Stimulators (TENS) (L33802)
- CMS: Transmittal R149NCD, TENS for Chronic Low Back Pain
- NHS: TENS (transcutaneous electrical nerve stimulation)
- University of Iowa Health Care: Transcutaneous electrical nerve stimulator (TENS)
- NCCIH: Complementary Health Approaches for Chronic Pain (information for clinicians)
Checked against the sources above on October 26, 2026. Coverage rules change, so check the linked page or your plan before you act.
This page gives general information, not medical advice. Talk with your doctor or physical therapist about your own care, and follow your clinician's and your device's instructions. In an emergency, call 911.
