Medicare does cover bunion surgery, but only when it’s deemed medically necessary. If your bunion causes persistent pain or limits your ability to walk, Medicare Part B will typically pay 80% of the approved cost after you meet your annual deductible. Surgery performed purely for cosmetic reasons, such as correcting the appearance of a painless bunion, is excluded.
What Medicare Requires for Coverage
Medicare Part B explicitly covers treatment for “bunion deformities” under its foot care benefits, but the key phrase is “medically necessary.” In practice, this means your bunion must cause documented pain or functional problems, not just look abnormal on an X-ray. A bunion that doesn’t bother you won’t qualify.
Most insurers, including Medicare contractors, expect you to have tried conservative treatments for at least six months before surgery is approved. These non-surgical steps typically include wearing wider shoes with a roomy toe box, using cushioning pads or shoe inserts, taking over-the-counter pain relievers, and in some cases receiving corticosteroid injections. Your doctor needs to document that these approaches failed to relieve your symptoms. If you skip straight to requesting surgery without this trail of documentation, coverage is likely to be denied.
Medicare also excludes cosmetic surgery by definition. Its policy manual states that any procedure “directed at improving appearance” is not covered, with an exception for procedures that improve “the functioning of a malformed body member.” Bunion surgery almost always falls under that functional exception when pain and mobility problems are well documented.
What You’ll Pay Out of Pocket
Under Original Medicare (Part B), you’re responsible for the annual deductible of $257 in 2025, plus 20% coinsurance on the Medicare-approved amount for the surgery. The remaining 80% is what Medicare pays directly.
The total cost varies depending on where the procedure is performed. Bunion surgery done at an ambulatory surgery center generally costs less than the same procedure at a hospital outpatient department, because Medicare reimburses facilities at different rates. Your surgeon’s fee is separate from the facility fee, and both are subject to the 20% coinsurance. You can look up estimated costs for specific procedures on Medicare’s Procedure Price Lookup tool using the relevant billing code (28296 is common for a standard bunionectomy with bone correction).
If you have a Medigap (Medicare Supplement) plan, it can significantly reduce or eliminate that 20% coinsurance. Plans A, B, C, D, F, G, M, and N all cover Part B coinsurance in full. Plans K and L cover 50% and 75% of it, respectively. If your Medigap plan also covers the Part B deductible (as Plans C and F do), your out-of-pocket cost for the surgery itself could be close to zero. Keep in mind that Plans F and G have high-deductible versions in some states, requiring you to pay up to $2,950 in Medicare-covered costs before the supplement kicks in.
Medicare Advantage Plans
If you’re enrolled in a Medicare Advantage (Part C) plan instead of Original Medicare, bunion surgery is still covered since these plans must offer at least the same benefits as Original Medicare. However, your costs and requirements may differ. Many Advantage plans use provider networks, so you’ll generally pay less if your surgeon and surgical facility are in-network. Some plans also require prior authorization before scheduling surgery, meaning you need the plan’s approval in advance. Contact your specific plan to confirm your copay or coinsurance amount, whether prior authorization is needed, and which surgeons and facilities are in-network.
Recovery Costs Medicare Covers
Coverage doesn’t end with the surgery itself. Medicare Part B also covers medically necessary physical therapy after bunion surgery, with no annual cap on how much it will pay. Your doctor must certify that therapy is needed, and you’ll pay the same 20% coinsurance on each session after your deductible is met. Durable medical equipment like a surgical boot or crutches is also covered under Part B when prescribed by your doctor, subject to the same cost-sharing.
Recovery from bunion surgery typically takes six to eight weeks before you can bear full weight, and several months before you’re back to normal activity. Physical therapy during this window helps restore strength and range of motion in the foot. The number of sessions varies by individual, but Medicare places no arbitrary limit on visits as long as each one is medically justified.
How to Avoid a Denied Claim
The most common reason bunion surgery claims get denied is insufficient documentation of medical necessity. To protect yourself, make sure your medical records clearly show your symptoms, including pain severity and how the bunion affects your daily activities like walking or standing. Keep records of every conservative treatment you’ve tried and for how long. Have your podiatrist or orthopedic surgeon document the clinical findings, including X-rays showing the degree of deformity.
If your claim is denied, you have the right to appeal. Medicare’s appeals process has five levels, starting with a redetermination by the Medicare contractor. Many denials are overturned on appeal when additional documentation is provided, so don’t assume an initial denial is the final word.