---
title: "What Is Medicare Part B? TENS and Pain Glossary"
description: "Medicare Part B is the part of Original Medicare that helps cover medically necessary outpatient services, preventive services and durable medical equipment..."
url: https://analgesic.multisites.ai/glossary/medicare-part-b
publisher: Analgesic Healthcare
phone: +1-800-749-1188
contact: https://analgesic.multisites.ai/contact
---

Insurance

# Medicare Part B

Medicare Part B is the part of Original Medicare that helps cover medically necessary outpatient services, preventive services and durable medical equipment ordered for use at home.

Medicare.gov says Part B helps cover two types of services: medically necessary services and preventive services. Its list of Part B coverage includes [durable medical equipment](https://analgesic.multisites.ai/glossary/durable-medical-equipment). Medicare.gov also says that if you are in a Medicare Advantage Plan, your plan may have different rules. Medicare writes its TENS rules in an [LCD](https://analgesic.multisites.ai/glossary/local-coverage-determination). Part B does not guarantee that any single TENS unit is covered. The policy sets the criteria, and Medicare says it will deny TENS for chronic low back pain as not reasonable and necessary under the LCD revision effective January 1, 2024. Read [Does Medicare cover a TENS unit?](https://analgesic.multisites.ai/guides/does-medicare-cover-tens-unit).

## Related terms

-   [Durable medical equipment](https://analgesic.multisites.ai/glossary/durable-medical-equipment)
-   [Medicare Advantage](https://analgesic.multisites.ai/glossary/medicare-advantage)
-   [Medical necessity](https://analgesic.multisites.ai/glossary/medical-necessity)
-   [Local coverage determination](https://analgesic.multisites.ai/glossary/local-coverage-determination)

## Sources

1.  [Medicare.gov: What Part B covers](https://www.medicare.gov/providers-services/original-medicare/part-b)
2.  [CMS: Local Coverage Determination L33802, Transcutaneous Electrical Nerve Stimulators (TENS)](https://www.cms.gov/medicare-coverage-database/view/lcd.aspx?lcdid=33802)

## 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/)