Medicare does not set a fixed number of chiropractic visits per year. There is no annual cap of 12, 20, or any other number. Instead, Medicare covers chiropractic adjustments for as long as your treatment is considered “medically necessary,” and stops covering them once it isn’t. That distinction, rather than a visit count, is what actually controls how many visits you can get.
What Medicare Covers (and What It Doesn’t)
Medicare Part B covers one specific chiropractic service: manual manipulation of the spine to correct a subluxation. A subluxation means your spinal joints aren’t moving properly, though the bones still maintain contact with each other. If your chiropractor is treating this condition with hands-on spinal adjustments, Medicare will pay its share.
What Medicare will not cover is essentially everything else a chiropractor might offer. X-rays ordered by your chiropractor, physical exams, massage therapy, acupuncture, electrical stimulation, and any other supplemental services are excluded. Even if your chiropractor performs these services in the same visit, you’ll pay out of pocket for anything beyond the spinal adjustment itself.
How “Medical Necessity” Replaces a Visit Limit
The reason there’s no hard visit cap is that Medicare uses a different gatekeeper: the concept of active treatment versus maintenance care. Your visits are covered as long as your chiropractor can document that the treatment is actively improving your condition or preventing it from getting worse. The moment your condition stabilizes and no further objective improvement is expected, Medicare classifies continued care as “maintenance therapy” and stops paying.
CMS (the agency that runs Medicare) breaks spinal conditions into categories that determine what counts as active treatment:
- Acute subluxation: A new injury identified by exam or X-ray. Treatment is expected to produce measurable improvement or stop the condition from progressing.
- Chronic subluxation: A longer-standing condition that won’t fully resolve but where continued adjustments can still produce some functional improvement. Once that improvement plateaus and your clinical status stays stable, coverage ends.
- Acute exacerbation: A flare-up of a previously treated condition that causes a noticeable decline in daily functioning. This essentially resets the clock, allowing a new course of covered treatment as long as improvement is documented.
In practical terms, this means some people get a handful of visits covered and others get dozens in a year, depending entirely on their condition and how they respond to treatment.
When Medicare Starts Asking Questions
While there’s no automatic cutoff, prolonged or repeated chiropractic treatment is more likely to trigger a medical review. CMS guidelines make clear that the longer a course of treatment goes on, the more documentation your chiropractor needs to justify continuing visits. If Medicare flags your claims for review, your chiropractor will receive an additional documentation request letter and must provide clinical records showing that each visit produced or was reasonably expected to produce measurable improvement.
If the reviewer determines that your condition had already stabilized before those visits, Medicare can deny the claims retroactively, leaving you responsible for the bill. This is why many chiropractors proactively discuss with patients when they believe Medicare coverage is likely to end for a given course of treatment.
What You’ll Pay Per Visit
For covered visits, standard Part B cost-sharing applies. You’ll first need to meet the annual Part B deductible, which is $257 in 2025. After that, you typically pay 20% of the Medicare-approved amount for each adjustment, and Medicare covers the remaining 80%. If you have a Medigap (supplemental) policy, it may cover some or all of that 20% coinsurance.
Keep in mind that the non-covered services your chiropractor provides during the same appointment, like an initial exam or X-rays, come entirely out of your pocket. This can make the real cost of a chiropractic visit significantly higher than the coinsurance on the adjustment alone.
Medicare Advantage Plans May Work Differently
If you’re enrolled in a Medicare Advantage plan rather than Original Medicare, your chiropractic benefits could look quite different. Medicare Advantage plans must cover at least what Original Medicare covers, so spinal adjustments for subluxation will still be included. However, many Advantage plans add supplemental chiropractic benefits that may cover additional services like exams or X-rays. Some plans do impose a specific visit limit per year as part of these supplemental benefits. The exact number varies by plan, so checking your plan’s Evidence of Coverage document is the only way to know your specific limit.
How to Get the Most From Your Coverage
Because coverage hinges on documented improvement rather than a visit count, the most important thing you can do is stay informed about your treatment plan. Ask your chiropractor whether they’re billing Medicare for each visit and whether they consider your treatment to still be in the “active” phase. Once your chiropractor believes you’ve reached maximum improvement, they should let you know that future visits would be classified as maintenance care and would not be covered.
If you want to continue maintenance visits after Medicare stops covering them, your chiropractor is required to notify you in advance, typically through a form called an Advance Beneficiary Notice (ABN). Signing this form means you acknowledge that Medicare likely won’t pay and that you’re agreeing to cover the cost yourself. If your chiropractor doesn’t give you this notice before providing non-covered services, you may not be obligated to pay for them.