How to get a TENS unit through your clinician: prescription, order, and trial steps

Do I need a prescription for a TENS unit?

If you want Medicare to pay, you need a written order from your treating practitioner. If you buy a unit on your own, rules and advice differ.

The Medicare TENS policy (LCD L33802) says: “A Standard Written Order (SWO) must be communicated to the supplier before a claim is submitted.” It adds that the ordering practitioner “must be the treating practitioner for the disease or condition justifying the need for the TENS unit.”

Outside Medicare, this is the advice. The NHS says: “If you want to try TENS for pain relief, it’s a good idea to check with a GP or other healthcare professional first, to make sure TENS is safe for you.” The NHS is the national health service of the United Kingdom. University of Iowa Health Care notes that TENS units are sold at local stores, medical supply stores, and online.

Some units carry a prescription-only label, and those need a clinician’s order. Check the label on your unit. Ask your clinician or your supplier if you are not sure which kind you have.

A TENS unit is not safe for everyone. Read the TENS unit safety guide before you buy or use one.

What is the difference between buying one and getting one through insurance?

Buying a unit is a personal purchase with no paperwork. Getting one through insurance means following the plan’s rules.

University of Iowa Health Care lists points to consider when you buy: pick a dual-channel model if you want up to four pads, check that replacement patches are easy to find, think about battery cost, and look at accessories.

Insurance varies. The same page says: “TENS units are not routinely covered by insurance, but all companies have different policies. Please call your insurance company to find out if your plan covers a TENS unit.” Our insurance coverage guide explains the Medicare rules. For Medicare Advantage, Medicaid, the VA, workers’ compensation, and private plans, check with your plan.

What happens at the doctor visit?

Your clinician talks with you, examines you, and decides if TENS fits your care. For Medicare, this visit is a face-to-face encounter, and it must be documented.

Policy article A52520 says Final Rule 1713 “requires a face-to-face encounter and a Written Order Prior to Delivery (WOPD) for specified HCPCS codes.” The medical record must show you meet the rules. For chronic pain, the article lists:

• The location of the pain
• The severity of the pain
• The duration of time you have had the pain
• The presumed cause of the pain
• Prior treatment and results of that treatment

Medicare also sets the pain rules. The LCD covers chronic, intractable pain and acute post-operative pain. For chronic pain, it requires that the pain “must have been present for at least three months” and that “Other appropriate treatment modalities must have been tried and failed.” TENS for chronic low back pain “will be denied as not reasonable and necessary,” and headache is listed as not reasonable and necessary.

Come prepared. Bring this list:

1. Where you feel pain, and how bad it is on a scale of 0 to 10.
2. How long you have had it.
3. Treatments you have tried, and what happened.
4. Your medicines, and any implanted devices such as a pacemaker.
5. Your insurance card and plan details.
6. Questions about TENS, in writing.

Tell your clinician about a pacemaker, epilepsy, pregnancy, or skin problems. These matter for safety.

Ask your clinician to explain, in plain words, why TENS fits your pain and what they will record in your chart. Ask for a copy of your visit notes if your plan needs them. Clear records help if a claim is questioned later.

What is a written order, and why must it come before delivery?

A written order is the clinician’s signed request for the unit. Medicare calls it a Standard Written Order (SWO). A Written Order Prior to Delivery (WOPD) means the supplier must have the signed order in hand before the unit is delivered.

The rule is strict. The LCD says: “If a supplier delivers a DMEPOS item without first receiving a WOPD, the claim shall be denied as not reasonable and necessary.” DMEPOS stands for durable medical equipment, prosthetics, orthotics, and supplies.

Policy article A52520 repeats the point and adds a harsh detail: “If the WOPD is not obtained prior to delivery, payment will not be made for that item even if a WOPD is subsequently obtained by the supplier.”

For you, this means one thing. Before a unit is delivered, ask the supplier to confirm that it already has your clinician’s order.

The order also covers supplies. The LCD says that when a base item needs a WOPD and separately billed accessories or supplies, the order must list the base item and may list the supplies.

What does the trial period look like?

For chronic pain, Medicare expects you to try the unit first. The LCD says the unit “must be used by the beneficiary on a trial basis for a minimum of one month (30 days), but not to exceed two months. The trial period will be paid as a rental.”

During the trial:

1. Use the unit as your clinician and the device instructions say.
2. Keep a log: the date, how long you used it, and how you felt.
3. Report skin problems, headache, dizziness, or nausea to your clinician. University of Iowa Health Care says to stop using TENS and talk with your care team if these occur.
4. Meet with your clinician at the end of the trial.

At the end, the record must show how often you used the unit, the typical length of use, and the results. Your clinician then decides what comes next. A TENS trial period exists so that the decision rests on how you did, not on a guess.

National policy NCD 160.7.1 says an electrical nerve stimulation trial is monitored by the physician or physical therapist, and that if TENS “produces no relief or greater discomfort than the original pain electrical nerve stimulation therapy is ruled out.” A purchase is covered only if the treating practitioner decides you are “likely to derive significant therapeutic benefit from continuous use of the unit over a long period of time.” For more on how trials work, see our guide to the TENS trial period.

What does the supplier do after the order arrives?

Under Medicare policy, a supplier must meet several rules before it can bill. These come from the LCD and apply to any Medicare supplier. They do not describe what any one company does.

Ask for a demonstration of pad placement, intensity, and cleaning. The NHS says a healthcare professional such as a physiotherapist can advise you on where to put the pads. University of Iowa Health Care says its patients receive a treatment program in their After Visit Summary. Ask your own clinician for a similar plan in writing.

What should I check before and after the unit arrives?

A short checklist helps you catch problems early. Use it with your clinician’s and the device’s instructions.

Keep copies of your order, your delivery receipt, and your plan’s letters. If a claim is denied, these papers help you and your clinician see what went wrong.

Read the TENS unit safety guide before first use. Turn the unit off before you put on, move, or take off the pads. University of Iowa Health Care gives that rule for your protection, and it also says not to share your pads with other people.

How do I use AHC’s preauthorization form for TENS units?

Analgesic Healthcare, Inc. (AHC) offers a preauthorization form for TENS units for doctors and physical therapists. The form is on our preauthorization form page. AHC is based at 7823 N. Dale Mabry Highway in Tampa, Florida, and is accredited by the Accreditation Commission for Health Care (ACHC). AHC says it has served patients since 1978.

Preauthorization means a plan approves a service before you receive it. The form does not guarantee that any plan will pay. Ask your clinician if the form applies to your care and if your plan needs preauthorization.

If you are a patient, you can call AHC at (800) 749-1188 with questions or use the contact page. If you are a clinician, the providers page explains more.

What should I do if my clinician is not sure about TENS?

Ask what would help them decide. A clinician may want more tests, a trial, or a physical therapy visit first. These are reasonable steps.

Try these questions:

• What would make TENS a good or poor choice for me?
• Can we try a short trial and track the result?
• Would a physical therapist help me learn to use it?
• What other treatments should I try first?
• Is there a safety reason I should not use TENS?

Do not start TENS if your clinician says it is not safe for you. Never stop or start a medicine because of TENS without asking your clinician.

If your clinician says no, ask why. Also remember Medicare’s rule on chronic low back pain and headache. A “no” may reflect coverage limits, not just medical advice. You can ask for a second opinion.

Next step

Make an appointment with your clinician to talk about TENS and bring the questions above. Then call Analgesic Healthcare at (800) 749-1188 or use our contact page if you have questions about getting a unit.

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.