Medicare Part B covers cataract surgery when your doctor says it is medically necessary

Yes, Medicare Part B covers cataract surgery. The surgery must be performed by an ophthalmologist or optometrist who accepts Medicare, and your doctor must document that the cataract is affecting your vision enough to interfere with daily activities. Medicare does not cover the surgery if it is purely for cosmetic reasons or if your vision loss is mild.

Part B pays 80 percent of the approved amount after you meet your annual deductible. You pay the remaining 20 percent, plus any difference between what the provider charges and what Medicare allows — unless your provider accepts assignment, which means they agree to accept Medicare's approved amount as full payment.

The surgery itself is typically an outpatient procedure. You go home the same day, though you will need someone to drive you because of the anesthesia used during the operation.

Key Takeaways

  • Medicare Part B covers cataract surgery when a doctor determines it is medically necessary and your vision loss affects your daily life.
  • You pay 20 percent of the approved cost after meeting your Part B deductible, plus any balance-billing charges if your provider does not accept assignment.
  • Intraocular lens implants — the artificial lens placed during surgery — are covered by Medicare at no extra charge.
  • If you have a Medigap or Medicare Advantage plan, your out-of-pocket costs may be lower than Original Medicare alone.
  • Your eye doctor must submit the claim to Medicare; you do not need to file paperwork yourself.

What Medicare Part B actually pays for

Medicare covers the surgical procedure, the facility fees, and the intraocular lens (IOL) — the artificial lens implanted during surgery. The IOL is considered part of the surgery, not a separate charge, so there is no additional cost to you beyond your normal Part B cost-sharing.

The surgeon's fee, the operating room, anesthesia, and post-operative visits during the standard recovery period are all included. Standard recovery typically means the first 90 days after surgery, during which your doctor monitors your healing and adjusts your prescription if needed.

If you choose a premium lens — such as a multifocal lens that corrects vision at multiple distances, or a toric lens for astigmatism — Medicare covers only the cost of a standard monofocal lens. You pay the difference out of pocket if you want the upgraded version. That difference varies by provider and lens type, but typically ranges from several hundred to over a thousand dollars per eye.

What you pay out of pocket

Your costs depend on whether you have Original Medicare alone, a Medigap plan, or a Medicare Advantage plan. With Original Medicare, you pay your Part B deductible (which is $240 in 2024, though this amount changes yearly) before Medicare begins paying its share. After you meet the deductible, you pay 20 percent of the Medicare-approved amount for the surgery.

If your surgeon does not accept assignment — meaning they do not agree to accept Medicare's approved amount as full payment — you may owe an additional 15 percent balance-billing charge on top of your 20 percent coinsurance. Before scheduling surgery, ask your surgeon's office whether they accept assignment.

If you have a Medigap policy, it typically covers some or all of your 20 percent coinsurance, depending on which Medigap plan you hold. If you have Medicare Advantage, your costs depend on your specific plan's copay or coinsurance structure; some plans charge a flat copay for surgery, while others use coinsurance. Check your plan documents or call your plan to learn your exact out-of-pocket cost before surgery.

How to prepare for Medicare coverage

Start by scheduling an appointment with an ophthalmologist or optometrist who accepts Medicare. During that visit, your doctor will examine your eye, measure how much the cataract is affecting your vision, and determine whether surgery is medically necessary. This examination is covered by Medicare as a standard office visit.

If your doctor recommends surgery, ask whether they accept assignment. If they do, you know your costs will not exceed 20 percent coinsurance plus any deductible you still owe. If they do not accept assignment, ask for a written estimate of the total charge so you can decide whether to proceed or seek a second opinion from a provider who does accept assignment.

Bring your Medicare card to your appointment. Your doctor's office will submit the claim to Medicare on your behalf; you do not need to file any paperwork yourself. The office will also verify your coverage and deductible status before the surgery date.

Medicare Advantage and Medigap differences

If you are enrolled in a Medicare Advantage plan, cataract surgery is still covered, but your out-of-pocket costs and provider network may differ from Original Medicare. Most Medicare Advantage plans cover cataract surgery with a copay or coinsurance, but you must use an in-network provider unless you have an emergency. Check your plan's provider directory to confirm your surgeon is in-network.

Medigap plans do not change what Medicare covers — they only help pay your share of the cost. If you hold a Medigap plan, Medicare still pays first, and your Medigap policy pays a portion of what you would otherwise owe. The exact amount depends on your Medigap plan letter (A through N). Plans G, F, and N typically offer the most comprehensive coverage of surgical costs.

If you do not yet have a Medigap or Medicare Advantage plan and are considering cataract surgery, you may want to explore your options. The timing of enrollment matters — you have limited windows to enroll in Medigap without medical underwriting, and Medicare Advantage enrollment follows the standard Annual Enrollment Period (October 15 to December 7 each year).

What happens if you delay surgery

Cataracts do not improve on their own and will gradually worsen over time. Delaying surgery will not damage your eye, but your vision will continue to decline. Some people wait until the cataract is very dense before having surgery, while others choose surgery earlier because the vision loss interferes with their activities.

Medicare does not require you to wait until your cataract reaches a certain stage before covering surgery. The decision is between you and your doctor based on how much the cataract affects your daily life — whether it makes driving unsafe, reading difficult, or other activities impossible.

If you are concerned about cost, remember that your out-of-pocket expense is capped at 20 percent coinsurance (plus any deductible or balance-billing) regardless of the total surgical cost. This means a more complex surgery or a longer operating time will not increase your percentage cost-share.

After surgery: follow-up care and costs

Post-operative visits during the standard 90-day recovery period are covered by Medicare as part of the surgical package. Your surgeon will see you the day after surgery, within the first week, and at several points over the following weeks to monitor healing and adjust your prescription.

After the 90-day global period ends, any additional visits are billed as separate office visits and covered under your regular Part B benefits. If you develop a complication after the global period — such as inflammation or infection — those visits and treatments are covered as medically necessary care, subject to your normal Part B cost-sharing.

Many people need new glasses or contact lenses after cataract surgery because their prescription changes. Medicare does not cover eyeglasses or contact lenses, but you can purchase them from any provider. Some vision insurance plans or discount programs may help reduce the cost.

Frequently Asked Questions

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

No. With Medicare Part B, you do not need a referral to see an ophthalmologist or optometrist. You can schedule an appointment directly. If you are in a Medicare Advantage plan, check your plan's rules — some require a referral, while others do not.

What if I have cataracts in both eyes?

Medicare covers surgery on both eyes, but surgeons typically operate on one eye at a time, usually waiting one to two weeks between surgeries to allow the first eye to heal. Each surgery is covered separately under your Part B benefits, so you will pay your cost-share for each procedure.

Will Medicare cover cataract surgery if I have other eye conditions like glaucoma or macular degeneration?

Yes. Having other eye conditions does not disqualify you from cataract surgery coverage. In fact, removing a cataract often improves vision in people with other eye diseases. Your surgeon will evaluate whether surgery is safe and beneficial in your specific situation.

Can I choose a specific type of intraocular lens and have Medicare pay for it?

Medicare covers a standard monofocal lens. If you want a premium lens such as multifocal, toric, or extended-depth-of-focus, you pay the difference between the standard lens cost and the premium lens cost out of pocket. Ask your surgeon for the exact price difference before surgery.

What if my doctor says I do not need cataract surgery yet, but I want it anyway?

Medicare will not cover surgery if your doctor does not document that it is medically necessary. If you want surgery for personal reasons before your doctor recommends it, you would need to pay for it privately. You can always seek a second opinion from another eye surgeon.