Medicare Covers Cataract Surgery, But You Pay a Share

Medicare Part B covers cataract surgery as medically necessary care. You pay 20 percent of the approved cost after you meet your Part B deductible for the year. The surgery itself — removing the clouded lens and inserting an intraocular lens implant — is covered. What you pay depends on whether you choose a standard implant or a premium lens, and whether your eye doctor is in the Medicare network.

The procedure is performed in an outpatient surgery center or hospital. You do not stay overnight. Medicare pays the facility, the surgeon, and the anesthesiologist. You are responsible for your coinsurance (20 percent) and any costs above what Medicare considers reasonable for your area.

Key Takeaways

  • Medicare Part B covers the surgery and a standard intraocular lens implant, and you pay 20 percent coinsurance after meeting your deductible.
  • Premium lens implants that correct astigmatism or presbyopia are not covered by Medicare, and you pay the full difference out of pocket.
  • Your actual out-of-pocket cost depends on whether your surgeon is in-network and whether you have supplemental insurance (Medigap) or a Medicare Advantage plan.
  • You need a referral from your eye doctor stating the cataract is affecting your vision enough to warrant surgery — Medicare does not cover surgery for cataracts that do not yet affect sight.

What Medicare Part B Actually Covers

Medicare covers the surgical removal of the cataract and insertion of a standard monofocal intraocular lens (IOL). This lens corrects distance vision. The surgery can be done on one eye or both, though typically they are done separately, a few weeks apart.

The covered services include the surgeon's fee, facility costs, anesthesia, and post-operative visits for the first 90 days. If complications arise during that 90-day period — such as infection or swelling — related treatment is also covered as part of the global surgical package.

You do not need prior authorization from Medicare to have cataract surgery, but your eye doctor must document that the cataract is reducing your vision enough to affect daily activities. Medicare will not cover surgery on a cataract that is present but not yet affecting sight.

Premium Lens Implants and What You Pay Out of Pocket

If you choose a premium intraocular lens — one that corrects astigmatism, presbyopia, or provides multifocal vision — Medicare covers only the cost of the standard lens. You pay the full difference between the standard lens and the premium lens yourself. This difference typically ranges from $500 to $3,000 per eye, depending on the lens type and your surgeon's pricing.

Some surgeons bundle the premium lens cost into their total fee; others bill it separately. Ask your surgeon in writing what the total cost will be, what Medicare will pay, and what you will owe. Do not assume the surgeon's office will handle the billing correctly — confirm the breakdown before surgery.

How Your Coinsurance Works

After you meet your Part B deductible (which is $226 in 2024, though this amount changes yearly), Medicare pays 80 percent of the approved amount for cataract surgery. You pay the remaining 20 percent.

The approved amount is set by Medicare based on your geographic area and the procedure code. If your surgeon charges more than the approved amount, you may owe the difference — this is called balance billing — unless your surgeon has agreed to accept Medicare's approved amount as payment in full.

In-network surgeons (those who accept Medicare assignment) agree to accept Medicare's approved amount and cannot balance bill you. Out-of-network surgeons can charge more, and you are responsible for the overage. Always confirm your surgeon is in-network before scheduling.

Medigap and Medicare Advantage: How They Reduce Your Cost

If you have a Medigap (supplemental insurance) plan, it typically covers some or all of your 20 percent coinsurance. The exact amount depends on your plan letter (A through N). Most Medigap plans cover the full 20 percent for surgery, meaning you pay only your deductible and any premium lens upgrades.

If you have a Medicare Advantage plan instead of Original Medicare, your out-of-pocket costs work differently. Advantage plans set their own copays and coinsurance for surgery. Some plans charge a flat copay (for example, $250 per eye); others charge coinsurance. Check your plan documents or call the plan to find out what you will owe before scheduling surgery.

Neither Medigap nor Medicare Advantage covers the cost of premium lens implants. That cost is always your responsibility.

Steps to Take Before Surgery

First, have your eye doctor (ophthalmologist or optometrist) examine you and confirm that a cataract is reducing your vision. The doctor will document this in your medical record — Medicare uses this documentation to determine coverage.

Second, ask your surgeon's office whether they accept Medicare assignment. If they do, you know you will not be balance billed. If they do not, ask for an estimate of what you will owe above Medicare's approved amount.

Third, if you have Medigap or Medicare Advantage, contact your supplemental plan or Advantage plan to confirm what they will cover for cataract surgery at your chosen surgeon's facility. Ask specifically whether the facility is in-network for your plan.

Fourth, get a written estimate from your surgeon that breaks down the cost of the standard lens, any premium lens options, and the total you will owe after Medicare and any supplemental insurance pays. Do not rely on verbal estimates.

What Happens If You Delay Surgery

Cataracts worsen over time. If you wait, the lens becomes denser and the surgery becomes more complex, which can increase costs and recovery time. Medicare covers surgery at any stage of cataract development, as long as it is affecting your vision.

Delaying surgery does not change what Medicare pays or what you pay as coinsurance. Your 20 percent coinsurance applies whether the cataract is mild or advanced. However, a more advanced cataract may require a longer surgery or a more experienced surgeon, which could affect the surgeon's fee and your out-of-pocket cost.

Frequently Asked Questions

Does Medicare cover cataract surgery in both eyes at the same time?

No. Medicare covers cataract surgery on each eye separately, typically scheduled a few weeks apart. This allows your first eye to heal before surgery on the second eye. Both surgeries are covered under the same rules, and you pay coinsurance for each eye separately.

What if my cataract is not yet affecting my vision?

Medicare will not cover surgery on a cataract that is present but not reducing your sight or affecting your daily activities. Your eye doctor must document that the cataract is the reason your vision has declined. If you have other vision problems (such as macular degeneration), surgery may not help, and your doctor will advise you.

Do I need a referral from my primary care doctor to see an eye surgeon?

No. You can see an ophthalmologist or optometrist directly under Medicare Part B without a referral. However, if you have a Medicare Advantage plan, check your plan documents — some Advantage plans require a referral or restrict which eye doctors you can see.

What if I have already met my Part B deductible for the year?

Then you pay only the 20 percent coinsurance for the approved amount of the surgery. If you have not met your deductible, you pay the full deductible first, then 20 percent of the remaining approved cost. Your deductible resets January 1 each year.

Can I choose a premium lens and have Medicare cover part of it?

No. Medicare covers only the standard monofocal lens. If you choose a premium lens, you pay the entire difference between the standard lens cost and the premium lens cost out of pocket. Medicare's 20 percent coinsurance applies only to the standard lens portion.