The one service Medicare actually covers

Medicare Part B covers exactly one chiropractic service: manual manipulation of the spine to correct a subluxation — a partial misalignment of a vertebra that causes nerve irritation or musculoskeletal dysfunction. This is billed using specific CPT codes (98940, 98941, or 98942) depending on how many spinal regions are treated, and every claim must include an "AT" modifier confirming the treatment is active and corrective, not maintenance.

To qualify, your chiropractor must document a diagnosed subluxation and demonstrate that the treatment is medically necessary. Once that documentation exists, Medicare Part A never applies here — chiropractic care is exclusively a Part B benefit, since it's outpatient care rather than hospital or facility-based treatment. After you meet the 2026 Part B deductible of $283, Medicare pays 80% of the approved amount, and you're responsible for the remaining 20% coinsurance.

It's worth understanding why chiropractic coverage is structured so much more narrowly than most other Part B services. Medicare's rules here date back to the program's original chiropractic benefit design, which was deliberately limited to the single service Congress specifically authorized — manual spinal manipulation — rather than the broader scope of care most chiropractors actually practice today. That historical narrowness is exactly why so many patients are surprised when the rest of a typical chiropractic visit isn't covered the same way.

What's excluded, even at the same visit

This is where most people get an unexpected bill. Medicare does not cover X-rays ordered by the chiropractor, even when that X-ray is specifically used to diagnose the subluxation the visit is treating — a detail that surprises a lot of beneficiaries, since it seems like a directly related, necessary part of the same treatment. Also excluded: massage therapy, acupuncture, extraspinal manipulation (adjustments outside the spine, like a shoulder or knee), physical therapy modalities like ultrasound or electrical stimulation, and separate evaluation-and-management office visit charges.

In practice, this means a single chiropractic appointment can generate a mix of covered and non-covered charges on the same bill — the spinal manipulation itself may be covered, while an X-ray, a massage add-on, or a separate exam fee charged during that same visit is billed to you directly. Asking your chiropractor's office to itemize exactly what will be submitted to Medicare, before treatment begins, is the clearest way to avoid confusion on the bill afterward.

This exclusion list isn't arbitrary — Medicare's chiropractic benefit was written narrowly on purpose, and CMS has repeatedly declined proposals to expand it to cover ancillary services, even as some members of Congress have periodically introduced legislation to broaden the benefit. Until any such expansion actually becomes law, the practical reality for beneficiaries remains the same: budget for the spinal manipulation coinsurance, and treat everything else offered at a chiropractic office as a separate, out-of-pocket decision.

The maintenance care trap

Here's the single most consequential distinction in this entire topic: Medicare only covers active treatment — care aimed at producing measurable functional improvement — not maintenance care, which seeks to maintain your current condition or prevent it from getting worse once you've reached your maximum benefit from treatment. The moment your chiropractor's documentation shifts from "improving" to "maintaining," Medicare coverage for that spinal manipulation stops, even if you're still visiting the same chiropractor for the same general reason.

When this transition happens, your chiropractor is required to remove the AT modifier from future claims and provide you with an Advance Beneficiary Notice (ABN) — a form confirming you understand Medicare won't pay and you're choosing to continue treatment at your own expense. If you continue chiropractic visits past this point without realizing the shift occurred, you may be surprised to find a full bill instead of a coinsurance charge for a visit you assumed was still covered.

This distinction isn't always obvious to the patient, since the visit itself often feels identical from your perspective — same chiropractor, same adjustment, same room. The shift happens in the documentation behind the scenes, based on whether your chiropractor is still recording measurable functional gains or has concluded your condition has plateaued. Asking your provider directly, at a regular interval rather than only when a bill looks different than expected, is the most reliable way to stay ahead of this transition rather than discovering it after the fact.

How many visits does Medicare cover?

Medicare doesn't impose a hard annual visit limit on chiropractic care, unlike some other therapy benefits. Instead, coverage continues for as long as every visit demonstrates genuine medical necessity and measurable functional improvement — the moment that documentation stops showing improvement, coverage stops too, regardless of how many visits you've already had covered.

This structure means the real limiting factor isn't a visit count, it's your chiropractor's ongoing documentation. Providers who bill Medicare regularly for chiropractic care are required to track and demonstrate this progress carefully, and a well-documented treatment plan showing objective improvement measures — range of motion, pain scale changes, functional task performance — supports continued coverage far more reliably than a general sense that the visits are "still helping."

For patients managing a chronic condition where periodic flare-ups are expected, this can create a somewhat unusual pattern: coverage that starts, stops once you've plateaued, and then potentially restarts if a new, documented flare-up creates a fresh episode of active treatment. Understanding this cyclical structure ahead of time helps explain why coverage for the same underlying condition can look different across different points in the year.

A new 2026 paperwork change worth knowing

CMS released an updated Advance Beneficiary Notice form in 2026, with a compliance deadline of May 12, 2026, for chiropractic and other Medicare providers. If your chiropractor's office transitions your care to maintenance status, you should be receiving this current version of the form, not an older one — a detail more relevant to the provider's compliance than something you need to verify yourself, but worth knowing if a form looks unfamiliar or your provider seems uncertain about the process.

How Medicare Advantage and Medigap change things

Medicare Advantage plans must cover the same core chiropractic benefit as Original Medicare, but many plans go further, adding supplemental chiropractic benefits — extra visits, extraspinal manipulation, or bundled services — that Original Medicare excludes entirely. These supplemental benefits vary significantly by carrier and county, so checking your specific plan's Evidence of Coverage document, or calling member services directly, is the only reliable way to know what's actually included beyond the baseline Part B benefit.

A Medigap policy works differently: it doesn't expand which chiropractic services are covered, but it can help cover your 20% coinsurance and Part B deductible on the one service Medicare does pay for. Medigap won't touch the X-ray, massage, or maintenance-care charges that Original Medicare excludes in the first place, since there's nothing underlying for a supplement to supplement.

Questions to ask before your first visit

• Has a specific subluxation been diagnosed, and will today's visit be billed with the AT modifier?
• Which specific services during this visit will be submitted to Medicare, and which will I be billed for directly?
• If X-rays are recommended, will they be billed to Medicare, or will I need to pay out of pocket?
• How will I know if my treatment shifts from active care to maintenance care?
• Does my Medicare Advantage plan include any supplemental chiropractic benefits beyond Original Medicare?
• If I don't have Medicare Advantage, what does a typical adjustment cost out of pocket in my area?

Chiropractic care without any coverage typically runs $60 to $200 per visit nationally, with most routine adjustments landing between $65 and $100, and an initial consultation — including a health history, exam, and treatment plan — typically costing $88 to $161. These figures are useful context whether you're paying the 20% coinsurance on a covered visit or the full cost of an excluded service.

Common questions about Medicare and chiropractic care

Have a question that isn't answered below? Our full health insurance FAQ page covers more, and our related guides on cataract surgery and stair lifts cover other specific Medicare coverage questions.