--- title: "Does Medicare Cover a TENS Unit? Rules as of 2026" description: "Does Medicare cover a TENS unit? Read what the Medicare policy L33802 says about covered pain, the trial, supplies, orders and chronic low back pain." url: https://analgesic.multisites.ai/guides/does-medicare-cover-tens-unit publisher: Analgesic Healthcare phone: +1-800-749-1188 contact: https://analgesic.multisites.ai/contact --- Guide # Does Medicare cover a TENS unit? What the rules say in 2026 Sometimes. Medicare's local policy (LCD L33802) covers a TENS unit for chronic, intractable pain or acute post-operative pain when set rules are met. It says TENS for chronic low back pain will be denied as not reasonable and necessary. Headache is also listed as not reasonable and necessary. Coverage is never certain. Updated October 26, 20267 min read5 sources ## Two covered uses The policy covers chronic, intractable pain and acute post-operative pain, when its criteria are met. ## Chronic low back pain: denied The policy says TENS for chronic low back pain will be denied as not reasonable and necessary. ## Headache: not covered The policy lists headache as a condition where TENS is not considered reasonable and necessary. ## Trial first For chronic pain, the policy requires a trial of one month (30 days) up to two months, paid as a rental. ## Rules as of 2026 These rules come from the policy revision effective January 1, 2024. Check for updates before you act. ## Does Medicare cover a TENS unit? Sometimes. Medicare covers a [TENS unit](https://analgesic.multisites.ai/glossary/tens-unit) only for certain kinds of pain, and only when its rules are met. This guide uses the policy as of the revision effective January 1, 2024, the current version in 2026. The rule is a Local Coverage Determination, or [LCD](https://analgesic.multisites.ai/glossary/local-coverage-determination). It is called L33802 and is titled “Transcutaneous Electrical Nerve Stimulators (TENS).” It was first effective October 1, 2015. The page lists Florida under jurisdiction J-C, run by CGS Administrators as the [DME MAC](https://analgesic.multisites.ai/glossary/dme-mac). Coverage is never certain. A clinician’s records, the order, the supplier and your plan all matter. Ask your doctor or physical therapist, then check with Medicare at 1-800-MEDICARE. The Medicare Coverage Database page tells beneficiaries with coverage questions to call that number or visit Medicare.gov. ## What kinds of pain does Medicare cover? The policy covers two uses: chronic, intractable pain and acute post-operative pain. The LCD says: “A TENS is covered for the treatment of beneficiaries with chronic, intractable pain or acute post-operative pain when one of the following coverage criteria, I or II, are met.” Use What the LCD says Limit Acute post-operative pain Covered “Coverage is limited to 30 days (one month’s rental) from the day of surgery. Payment will be made only as a rental.” Chronic, intractable pain other than chronic low back pain Covered when all criteria are met Pain present at least three months; other appropriate treatments tried and failed; cause accepted as responding to TENS Acute pain other than post-operative Not covered “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.” Chronic low back pain Not covered “TENS therapy for Chronic Low Back Pain (CLBP) will be denied as not reasonable and necessary.” The policy also requires that the ordering practitioner be “the treating practitioner for the disease or condition justifying the need for the TENS unit.” A clinician who does not treat your pain cannot meet this rule. ## Which pain does Medicare not cover? Medicare does not cover chronic low back pain or headache. The LCD says that for chronic pain, the cause “must be a type that is accepted as responding to TENS therapy.” It gives examples of conditions for which TENS “is not considered to be reasonable and necessary” and says the list is not all-inclusive: - headache - visceral abdominal pain - pelvic pain - temporomandibular joint (TMJ) pain The LCD adds: “TENS therapy for chronic pain that does not meet these criteria will be denied as not reasonable and necessary.” Chronic low back pain is its own rule. A 2012 Medicare decision first limited TENS for it to an approved clinical study, and the policy now says it is denied. Read the full story in the [TENS for lower back pain guide](https://analgesic.multisites.ai/guides/tens-for-lower-back-pain) and in the [post on Medicare and chronic low back pain](https://analgesic.multisites.ai/medicare-tens-chronic-low-back-pain). A denial for Medicare payment does not mean a clinician cannot suggest TENS. It means Medicare will not pay under this rule. ## How do the trial, rental and purchase work? For chronic pain, you must 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, your treating practitioner watches how well the unit works. To cover a purchase, the practitioner “must determine that the beneficiary is likely to derive significant therapeutic benefit from continuous use of the unit over a long period of time.” A 2012 Medicare transmittal explains the logic: “Since TENS falls within the durable medical equipment (DME) benefit, Medicare coverage results in purchase after a brief initial rental period.” See the [TENS trial period guide](https://analgesic.multisites.ai/guides/tens-trial-period) for what a trial looks like. The [DME](https://analgesic.multisites.ai/glossary/durable-medical-equipment) glossary entry explains the term. A unit with four leads can be used with two or four. If a practitioner orders it for four, the LCD says the “medical record must document why 2 leads are insufficient.” ## What supplies does Medicare cover? Medicare covers supplies only with a covered unit. The LCD says that reimbursement for supplies “is contingent upon use with a covered TENS unit.” Claims for supplies with no covered unit “will be denied.” Item What the policy says Supplies during a rental Included in the rental allowance; no extra allowance for electrodes, lead wires and batteries (policy article A52520) Supplies after a purchase The purchase allowance includes lead wires and one month’s supply of items such as electrodes and batteries (A52520) Replacement supplies (A4595) Usual maximum: one unit per month for 2 leads, two units per month for 4 leads Less than daily use Billing for the supply code should be reduced in proportion [Lead wires](https://analgesic.multisites.ai/glossary/lead-wire) (A4557) Replacing more often than every 12 months “would rarely be reasonable and necessary” [Conductive garment](https://analgesic.multisites.ai/glossary/conductive-garment) (E0731) “rarely reasonable and necessary”; covered only if set conditions are met The LCD also says suppliers must contact you before they send a refill. It says suppliers “must not deliver refills without a refill request and an affirmative response from a beneficiary.” Contact about a refill can happen no sooner than 30 calendar days before the current supply is expected to end. ## What paperwork does Medicare require? Medicare requires a written order before the supplier delivers the unit. The LCD says: “A Standard Written Order (SWO) must be communicated to the supplier before a claim is submitted.” A [written order prior to delivery](https://analgesic.multisites.ai/glossary/written-order-prior-to-delivery) must be received before the item is delivered, for items that need one. Policy article A52520 says claims for items on the CMS list need a [face-to-face encounter](https://analgesic.multisites.ai/glossary/face-to-face-encounter) and a written order prior to delivery. It also says: “If a supplier delivers an item prior to receipt of a WOPD, it will be denied as not reasonable and necessary.” Ask your clinician whether your item is on that list. The same article says the records must show the length of time you have had the pain. It also says the reevaluation at the end of the trial must indicate: - how often you used the unit - the typical duration of use each time - the results (effectiveness of therapy) A log from you helps with these three. Medicare’s rules are about [medical necessity](https://analgesic.multisites.ai/glossary/medical-necessity), so records matter. See the [how to get a TENS unit guide](https://analgesic.multisites.ai/guides/how-to-get-a-tens-unit) and the [Medicare and insurance coverage guide](https://analgesic.multisites.ai/guides/tens-unit-insurance-coverage) for the wider picture. ## Who writes the rules, and which ones apply to me? Two layers of rules apply. National rules apply everywhere. Local rules fill in the details for your region. The LCD lists these national Medicare documents as its base: sections 10.2, 160.7.1, 160.13, 160.27 and 280.13 of the National Coverage Determinations Manual. National section 160.7.1 covers how a clinician checks if you are a good fit for a nerve stimulator. It says the technique “is used by the patient on a trial basis and its effectiveness in modulating pain is monitored by the physician, or physical therapist.” It also says: “if it produces no relief or greater discomfort than the original pain electrical nerve stimulation therapy is ruled out.” That means a trial can end with a clear answer of no. The LCD is written by the DME MACs for their regions. Because Florida sits in jurisdiction J-C, the J-C contractor, CGS Administrators, owns the version that applies to Florida claims. Policies can change, so check the date on the version you read. ## What should I ask my clinician before I start? Ask questions that match the policy criteria. This list turns the rules into plain questions: Policy point Question to ask Type of pain Is my pain chronic, intractable pain, or post-operative pain? Not low back or headache Is my pain chronic low back pain or headache? If so, Medicare will not pay under this policy. Three months Have I had this pain for at least three months? Other treatments Which other treatments have I tried? Will the record show them? Treating practitioner Are you the treating practitioner for this pain? Order Will you send a written order to the supplier before delivery? Trial Who will watch my trial? When do we meet to review it? Log What should I write down during the trial? Bring your Medicare card and your plan card to the visit. Ask the supplier which one it bills. Write down the answers. ## What about Medicare Advantage? Check with your plan. [Medicare Advantage](https://analgesic.multisites.ai/glossary/medicare-advantage) plans may handle TENS units in their own way. Plans may have their own steps, supplier networks or approval rules. Ask your plan these questions: 1. Does the plan cover TENS units, and for which kinds of pain? 2. Does the plan require an approval before I get a unit? 3. Which suppliers can I use? 4. Does the plan cover a trial, and for how long? 5. Does the plan cover supplies, and how many each month? ## What can I do if Medicare denies my claim? You can appeal. For Original Medicare, Medicare.gov says the first level of appeal is called a redetermination. It says: “You must file your appeal by the date in the MSN” (your Medicare Summary Notice). A late appeal may still be heard if you show good cause for missing the deadline. Medicare.gov says you will generally get a decision from the Medicare contractor “within 60 days after they get your appeal.” If your denial letter names LCD L33802 or TENS, ask your doctor to help you understand it. Ask your clinician about other options for your pain. ## Next step Talk with your doctor or physical therapist about whether your pain type fits the policy. Then call Analgesic Healthcare at (800) 749-1188 or use the [contact page](https://analgesic.multisites.ai/contact) with questions about getting a TENS unit. ## Questions people ask ### Does Medicare cover a TENS unit? Sometimes. Medicare's local policy L33802 covers TENS for chronic, intractable pain or acute post-operative pain when its criteria are met. It does not cover chronic low back pain or headache. Whether your claim is paid depends on your records and your plan, so ask your clinician and Medicare. ### Does Medicare cover a TENS unit for back pain? Not for chronic low back pain. LCD L33802 says TENS therapy for chronic low back pain will be denied as not reasonable and necessary. The policy covers chronic, intractable pain other than chronic low back pain when all its criteria are met, and acute post-operative pain. ### Does Medicare cover TENS supplies like electrodes? Only when the supplies are used with a covered TENS unit. The policy allows a usual maximum of one unit of A4595 per month for 2 leads and two units per month for 4 leads. During a rental, supplies are included in the rental allowance. ### How long is the Medicare TENS trial period? For chronic pain, LCD L33802 says the trial must last a minimum of one month (30 days), but not exceed two months. The trial is paid as a rental, and the treating practitioner must monitor it. For post-operative pain, coverage is limited to 30 days from surgery. ### Does Medicare Advantage cover a TENS unit the same way? Plans differ, so check with your plan. Medicare Advantage plans are run by private companies and may have their own steps. Ask your plan about covered pain types, orders, supplier networks and any approval step before you get a unit. ### What can I do if Medicare denies my TENS claim? You can appeal. Medicare.gov says the first level in Original Medicare is called a redetermination, and you must file by the date on your Medicare Summary Notice. The Medicare contractor generally decides within 60 days after it gets your appeal. ## Terms on this page - [Written order prior to delivery](https://analgesic.multisites.ai/glossary/written-order-prior-to-delivery) - [Local coverage determination](https://analgesic.multisites.ai/glossary/local-coverage-determination) - [Durable medical equipment](https://analgesic.multisites.ai/glossary/durable-medical-equipment) - [Face-to-face encounter](https://analgesic.multisites.ai/glossary/face-to-face-encounter) - [Chronic low back pain](https://analgesic.multisites.ai/glossary/chronic-low-back-pain) - [Post-operative pain](https://analgesic.multisites.ai/glossary/post-operative-pain) - [Conductive garment](https://analgesic.multisites.ai/glossary/conductive-garment) - [Medicare Advantage](https://analgesic.multisites.ai/glossary/medicare-advantage) - [Medical necessity](https://analgesic.multisites.ai/glossary/medical-necessity) - [Chronic pain](https://analgesic.multisites.ai/glossary/chronic-pain) ## Sources 1. [CMS Medicare Coverage Database: Transcutaneous Electrical Nerve Stimulators (TENS) (L33802)](https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdid=33802) 2. [CMS Medicare Coverage Database: TENS Policy Article (A52520)](https://www.cms.gov/medicare-coverage-database/view/article.aspx?articleid=52520) 3. [CMS: Transmittal 149, TENS for Chronic Low Back Pain (NCD 160.27)](https://www.cms.gov/regulations-and-guidance/guidance/transmittals/downloads/r149ncd.pdf) 4. [CMS Medicare Coverage Database: NCD 160.7.1, Assessing Patient's Suitability for Electrical Nerve Stimulation Therapy](https://www.cms.gov/medicare-coverage-database/view/ncd.aspx?NCDId=63) 5. [Medicare.gov: Appeals in Original Medicare](https://www.medicare.gov/providers-services/claims-appeals-complaints/appeals/original-medicare) 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. ## Keep reading - [Does insurance or Medicare cover a TENS unit? What the Medicare policy saysMedicare covers TENS units under its durable medical equipment benefit, but only for certain pain and only when its rules are met. As of the LCD revision effective January 1, 2024, Medicare covers chronic intractable pain and acute post-operative pain. It denies TENS for chronic low back pain. Other plans may differ, so check with your plan.](https://analgesic.multisites.ai/guides/tens-unit-insurance-coverage) - [Why Medicare does not cover TENS for chronic low back painAs of the Medicare LCD revision effective January 1, 2024, TENS for chronic low back pain will be denied as not reasonable and necessary. CMS allowed coverage only inside approved clinical studies from 2012, and that window ended in June 2015. Other pain types have their own rules.](https://analgesic.multisites.ai/medicare-tens-chronic-low-back-pain) - [TENS for lower back pain: what the evidence and Medicare coverage sayMedicare does not cover TENS for chronic low back pain. CMS decided on June 8, 2012 that the evidence was inadequate to support coverage. The current policy, LCD L33802, says it will be denied as not reasonable and necessary. A 2022 review calls the wider TENS evidence uncertain. Ask your clinician about options.](https://analgesic.multisites.ai/guides/tens-for-lower-back-pain) - [The TENS trial period: what the first 30 days look likeA TENS trial is a test period before you decide to keep a unit. For chronic pain, Medicare's policy requires a trial of at least one month (30 days) and no more than two months, paid as a rental. Your clinician watches how it works. Other plans may differ, so check with your plan.](https://analgesic.multisites.ai/guides/tens-trial-period) - [TENS unit electrode pads, lead wires and supplies: what you need and what Medicare saysA TENS kit has the unit, lead wires, electrode pads and a power source. Pads wear out as the adhesive fades. For covered use, Medicare's LCD L33802 sets a usual maximum of one unit of A4595 per month for 2 leads and two units for 4 leads. Lead wires, A4557, rarely need replacing more often than every 12 months.](https://analgesic.multisites.ai/guides/tens-electrode-pads-supplies-guide) - [How to get a TENS unit through your clinician: prescription, order, and trial stepsTo get a TENS unit through insurance, start with a visit to your clinician. Medicare requires a face-to-face visit and a written order before the supplier delivers the unit. For chronic pain, you first use the unit on a 30-day to two-month rental trial. Your clinician reviews the results. Rules differ for other plans, so check with yours.](https://analgesic.multisites.ai/guides/how-to-get-a-tens-unit) ## Questions about your unit or a bill? Call toll free. For customer care, ask for extension 508. [Call (800) 749-1188](tel:+1-800-749-1188)[Pay invoice](https://ahcpatientservices.com/)