Medicare Part B covers cataract surgery as medically necessary care

Medicare Part B covers the full cost of cataract surgery when your doctor determines it is medically necessary — meaning the cataract is affecting your vision enough to interfere with daily life. You pay 20 percent of the approved amount after you meet your annual Part B deductible. Medicare pays the remaining 80 percent. There is no yearly limit on how much Medicare will cover for cataract surgery.

The surgery itself is covered, along with the pre-surgery exam, the intraocular lens (the artificial lens implanted during surgery), and post-surgery care visits. What varies is whether you choose a standard monofocal lens or pay extra for a premium lens that corrects astigmatism or allows reading without glasses.

Key Takeaways

  • Medicare Part B covers cataract surgery and the standard intraocular lens at no cost beyond your 20 percent coinsurance after the deductible.
  • Your eye doctor must document that the cataract is reducing your vision enough to affect your daily activities for Medicare to cover the surgery.
  • Premium intraocular lenses that reduce the need for glasses are not covered by Medicare, and you pay the full difference out of pocket.
  • If you have a Medigap or Medicare Advantage plan, your out-of-pocket costs may be lower than the standard 20 percent coinsurance.

What Medicare covers and what you pay

Medicare Part B covers the surgeon's fee, the facility fee, anesthesia, and the standard monofocal intraocular lens. You are responsible for 20 percent coinsurance on the approved amount for each of these services. The approved amount is what Medicare has set as the standard fee for that service in your area — not necessarily what the surgeon charges.

If your surgeon's actual charge is higher than Medicare's approved amount, you may owe the difference if they are not a Medicare-participating provider. Always confirm your surgeon accepts Medicare assignment before scheduling.

The Part B deductible for 2024 is $240. Once you meet this deductible, Medicare pays 80 percent of approved charges for cataract surgery and related care. If you have already met your deductible earlier in the year for other services, you will not pay it again for cataract surgery.

Premium lenses and out-of-pocket costs

If you choose a premium intraocular lens — such as a multifocal lens that reduces dependence on reading glasses, or a toric lens that corrects astigmatism — Medicare does not cover the additional cost. You pay the full difference between the standard lens and the premium lens out of pocket. This difference typically ranges from $500 to $2,500 per eye, depending on the lens type and surgeon.

Some surgeons bundle the premium lens cost into a single out-of-pocket fee. Others itemize it separately. Ask your surgeon's office for a written estimate that breaks down what Medicare will cover and what you will owe for any premium lens option you are considering.

How to confirm Medicare will cover your surgery

Your eye doctor performs a visual acuity test and documents the results in your medical record. Medicare requires that your vision be reduced to a specific level — generally 20/40 or worse in the eye being treated — and that the cataract is the cause. The doctor's notes must show that the cataract is affecting your ability to perform normal activities like reading, driving, or watching television.

If your vision loss is caused by something other than the cataract — such as macular degeneration — Medicare may deny coverage even if you have a cataract. Your eye doctor will know whether your case meets Medicare's standard and can tell you before you schedule surgery.

You do not need prior authorization from Medicare for cataract surgery. Your surgeon's office can submit the claim directly after the procedure. However, if you want to confirm coverage before surgery, you can contact Medicare at 1-800-MEDICARE and provide your doctor's name and the diagnosis code for your cataract.

Costs if you have Medigap or Medicare Advantage

If you have a Medigap (supplemental insurance) plan, your coinsurance costs may be reduced or eliminated depending on which plan you hold. Medigap Plan C and Plan F, for example, cover the Part B coinsurance, so you would owe nothing beyond the deductible. Plans with lower premiums may cover only part of the coinsurance.

If you have Medicare Advantage (Part C), your out-of-pocket costs depend on your specific plan. Some Medicare Advantage plans cover cataract surgery with a copay of $0 to $500 per eye. Others require coinsurance. Check your plan documents or call the plan's customer service line to learn your exact costs before scheduling surgery.

What happens if Medicare denies coverage

Medicare may deny coverage if your vision loss is not severe enough, if the cataract is not the cause of your vision problem, or if your doctor did not document the medical necessity correctly. If you receive a denial, you have the right to appeal.

The first step is to ask your eye doctor to review the denial letter and confirm whether the documentation was complete. Sometimes a denial results from incomplete medical records rather than a true coverage issue. Your doctor can resubmit with additional notes.

If your doctor confirms the documentation was complete and you disagree with the denial, you can file a formal appeal with Medicare. The appeal process has multiple levels, starting with a reconsideration request. You have 120 days from the date on the denial letter to request reconsideration. Contact Medicare at 1-800-MEDICARE for appeal forms and instructions.

Frequently Asked Questions

Does Medicare cover cataract surgery in both eyes?

Yes. Medicare covers cataract surgery in each eye separately. You will meet your Part B deductible once per year, so if you have surgery on both eyes in the same calendar year, you typically pay the deductible only once. Each eye is then subject to the 20 percent coinsurance.

What if I have cataracts but my vision is still 20/20?

Medicare will not cover surgery if your vision is better than the threshold Medicare requires, even if you have a visible cataract. The cataract must be causing measurable vision loss that affects your daily activities. If your vision worsens later, you can reapply.

Can I choose any surgeon, or does it have to be in-network?

You can see any surgeon who accepts Medicare assignment. There is no network requirement with Original Medicare Part A and Part B. If you have Medicare Advantage, check your plan documents — many require you to use in-network surgeons to receive full coverage.

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

No. With Original Medicare, you do not need a referral. You can schedule directly with an ophthalmologist or optometrist who performs cataract surgery. If you have Medicare Advantage, check your plan — some require a referral, others do not.

Will Medicare cover cataract surgery if I also have other eye conditions?

Yes, as long as the cataract itself is causing the vision loss that meets Medicare's threshold. If you have multiple eye conditions, your doctor must document that the cataract is the primary cause of your reduced vision for Medicare to cover the surgery.