Medicare Part B covers shoulder replacement surgery if your doctor says it is medically necessary

Medicare Part B pays for shoulder replacement (also called shoulder arthroplasty) when a doctor documents that the surgery is needed to treat a condition like severe arthritis, rotator cuff damage, or a fracture that cannot be treated another way. The surgery itself, the surgeon's fee, anesthesia, and the hospital stay are all covered. You pay your Part B deductible first, then Medicare pays 80 percent of the approved amount, and you pay the remaining 20 percent.

The key word is medically necessary. Medicare will not pay if the surgery is cosmetic or if your doctor thinks physical therapy or other non-surgical treatment should be tried first. Your doctor has to submit documentation to Medicare showing why surgery is the right next step for your specific shoulder problem.

Where you have the surgery matters for your costs. If it happens in a hospital outpatient surgery center, you pay a copay (usually $100 to $300) instead of the 20 percent coinsurance. If it happens in an inpatient hospital stay, Part A covers the hospital costs after your Part A deductible, and Part B covers the surgeon and anesthesia.

Key Takeaways

  • Medicare Part B covers shoulder replacement surgery when your doctor documents it is medically necessary, not optional or cosmetic.
  • You pay your Part B deductible, then 20 percent of the approved cost; outpatient surgery at a surgery center may have a lower copay instead.
  • Your doctor must submit medical records and imaging to Medicare before surgery to show why surgery is the right treatment for your condition.
  • If you have a Medigap or Medicare Advantage plan, your out-of-pocket costs may be lower because those plans cover some or all of your coinsurance.
  • Implant costs (the artificial shoulder joint itself) are included in what Medicare pays — you do not pay extra for the device.

What "medically necessary" means for shoulder surgery

Medicare uses a specific definition: the surgery must be reasonable and necessary to diagnose, treat, or improve a condition that affects your health. For shoulder replacement, this usually means your doctor has documented severe arthritis, a rotator cuff tear that cannot heal on its own, or a fracture of the shoulder joint that leaves you unable to use your arm.

Medicare will not pay if your shoulder pain is mild, if you have not tried physical therapy or other non-surgical options first, or if the surgery is being done to improve appearance or athletic performance. Your doctor's notes have to show that you have exhausted other treatments and that surgery is the next appropriate step.

The decision is made by Medicare's medical review process, not by you or your doctor alone. If Medicare denies the surgery as not medically necessary, your doctor can appeal with additional medical evidence, or you can request an independent review.

How much you pay out of pocket

Your costs depend on where the surgery happens and what other insurance you have. If the surgery is done in a hospital outpatient surgery center, you typically pay a copay of $100 to $300 and nothing more — Medicare and the facility handle the rest. If it is done in a hospital as an inpatient procedure (meaning you stay overnight), you pay your Part A deductible ($1,676 in 2024, though this amount changes yearly) for the hospital stay, and then Medicare covers the rest of the hospital costs.

For the surgeon and anesthesia, Medicare Part B applies. You pay your Part B deductible ($240 in 2024) if you have not met it yet that year, then you pay 20 percent of the approved amount. The approved amount is set by Medicare, not by what the surgeon charges. If your surgeon is in-network (accepts Medicare), they cannot charge you more than the approved amount.

If you have a Medigap policy (supplemental insurance), it usually covers your 20 percent coinsurance, so your out-of-pocket cost drops to just the deductibles. If you have a Medicare Advantage plan, your costs depend on your plan's rules — some cover the full cost after a copay, others charge coinsurance. Check your plan documents or call the plan before surgery to know your exact cost.

The approval process before surgery

Your surgeon's office will submit your medical records, X-rays, and imaging (usually an MRI or CT scan) to Medicare for review. This is called prior authorization or precertification. Medicare reviews the documentation to confirm the surgery is medically necessary before approving payment.

This review usually takes 5 to 10 business days. Your surgeon's office will tell you whether Medicare approved it. If Medicare denies it, your doctor can appeal by submitting additional evidence — for example, a letter explaining why other treatments have failed or why your condition is severe enough to warrant surgery.

Do not schedule surgery until you have written approval from Medicare. If you proceed without approval and Medicare later denies the claim, you could be responsible for the full bill. Your surgeon's office should handle this step, but it is your responsibility to confirm it happened.

Shoulder replacement in a hospital versus outpatient surgery center

Most shoulder replacements are now done in outpatient surgery centers, where you go home the same day. Your costs are lower here: you pay a copay (usually $100 to $300) and that is it. Medicare Part B still covers the surgeon and anesthesia, but the facility fee is bundled into a single payment to the center.

If your surgery is done in a hospital outpatient department, the costs are similar to a surgery center — a copay rather than 20 percent coinsurance. If you need to stay overnight in the hospital (inpatient), your costs are higher because your Part A deductible applies to the hospital stay.

Your surgeon and your medical condition determine where the surgery happens. If you have other health problems that require monitoring overnight, or if complications arise during surgery, the hospital may keep you as an inpatient. Ask your surgeon in advance where the procedure is scheduled and what your costs will be in that setting.

What happens if Medicare denies the surgery

If Medicare's medical review determines the surgery is not medically necessary, you receive a notice called a information Notice. This notice explains why Medicare denied it and tells you how to appeal. You have 120 days from the date of the notice to request an appeal.

To appeal, your doctor can submit additional medical evidence — for example, documentation that you have tried physical therapy for a specific period and it did not work, or imaging that shows severe joint damage. Many denials are overturned on appeal when the doctor provides more detailed information about why surgery is the right next step.

If the appeal is denied again, you can request an independent review by a third party not employed by Medicare. This process takes longer but gives you another chance to present your case. Throughout this process, you can still have the surgery and pay out of pocket, but you would not be reimbursed if Medicare later approves it.

Implants and devices are included in Medicare coverage

The artificial shoulder joint (prosthesis) is included in what Medicare pays for shoulder replacement surgery. You do not pay extra for the implant itself. Medicare covers the cost of the device as part of the surgical procedure.

If your surgeon wants to use a specialized or newer implant that costs more than the standard device, Medicare still covers it at the standard approved amount. Your surgeon cannot charge you the difference between what they paid for the implant and what Medicare approves. If your surgeon uses a premium implant, the cost to you remains the same.

Frequently Asked Questions

Will Medicare cover shoulder replacement if I have not tried physical therapy first?

Medicare usually requires documentation that you have tried conservative treatment like physical therapy before approving surgery. Your doctor's notes should show how long you did therapy, what exercises you did, and why it did not relieve your pain. If you have not tried therapy, ask your doctor whether Medicare will require it before surgery can be approved.

What if my surgeon is not in-network with Medicare?

All doctors who accept Medicare are considered in-network — Medicare does not have a network the way private insurance does. If your surgeon accepts Medicare, they must accept the approved amount and cannot bill you for the difference. If your surgeon does not accept Medicare, you would pay out of pocket and would not be reimbursed by Medicare.

Do I need prior authorization from my Medicare Advantage plan as well as Medicare?

Yes. If you have a Medicare Advantage plan, your plan may require its own prior authorization in addition to Medicare's review. Your surgeon's office should submit to both. Ask your plan whether it requires pre-approval before scheduling surgery, because some plans will not cover the surgery if pre-approval was not obtained.

Can I choose which shoulder joint implant Medicare covers?

Medicare covers the cost of a standard shoulder implant. If you want a specific brand or type of implant that costs more, you can pay the difference out of pocket, but Medicare will not reimburse that extra cost. Discuss implant options with your surgeon and ask what the standard approved implant is for your condition.

What if I have both Medicare and Medicaid?

If you have both, Medicaid may cover costs that Medicare does not, such as your deductible or coinsurance. The process is the same — Medicare pays first, then Medicaid may cover your remaining costs. Your surgeon's office should know how to bill both programs, but confirm this before surgery.