If you have Original Medicare, cataract surgery on your second eye is generally covered under Medicare Part B when it is medically necessary, but it is not treated as a free follow-up to the first eye. You normally face Part B cost sharing for the second procedure just as you did for the first.
For 2026, the Part B annual deductible is $283. After that deductible is satisfied, you generally pay 20% of the Medicare-approved amount for covered cataract surgery. Medicare’s 2026 national procedure-price data for routine cataract removal with an intraocular lens, CPT 66984, shows an average patient payment of about $343 at an ambulatory surgical center and about $563 at a hospital outpatient department. These are national averages, not guaranteed quotes for your second eye.
The most important second-eye detail is the calendar. If your first surgery already satisfied your Part B deductible and the second operation happens in the same calendar year, you normally do not pay that annual deductible again. If the second eye is operated on after January 1 of a new year, a new Part B deductible applies.
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How Medicare Treats Cataract Surgery on the Second Eye
Medicare does not treat the two eyes as one bundled lifetime cataract procedure. Each eye has its own cataract, clinical findings, procedure and medical-necessity documentation.
The official Medicare cataract surgery guidance states that Part B may cover cataract surgery that implants a conventional intraocular lens. After the Part B deductible, a beneficiary generally pays 20% of the Medicare-approved amount for the covered facility and physician services.
CMS cataract coverage policies also make an important second-eye distinction: when cataracts affect both eyes, medical necessity must be supported for each procedure. Having the first eye approved does not by itself guarantee that surgery on the opposite eye is automatically covered regardless of its condition.
If you are still working out whether the operations will be staged or performed closer together, the site’s guide to cataract surgery on one eye or both eyes explains the practical differences between sequential and same-day approaches.
What Does Second-Eye Cataract Surgery Cost With Original Medicare?
There is no single nationwide bill because Medicare payments vary by location, facility type and the exact services performed. Still, Medicare’s Procedure Price Lookup gives a useful 2026 benchmark for routine cataract extraction with insertion of an intraocular lens.
| 2026 national average for CPT 66984 | ASC | Hospital outpatient |
|---|---|---|
| Medicare-approved total | About $1,717 | About $2,819 |
| Medicare payment shown | About $1,374 | About $2,256 |
| Average patient payment shown | About $343 | About $563 |
Those figures come from Medicare’s 2026 Procedure Price Lookup for CPT 66984. Medicare notes that the numbers are national averages and that additional physicians, procedures or services can change the final bill.
That distinction matters when you are budgeting for the second eye. The advertised surgical estimate may not tell you everything about anesthesia, separately billable testing, noncovered refractive services or elective lens upgrades.
For a broader look at how those variables affect a cataract bill, see the site’s Medicare cataract surgery cost guide for 2026.
The $283 Question: Has Your 2026 Part B Deductible Already Been Met?
In 2026, the Medicare Part B annual deductible is $283. It is an annual deductible, not a per-eye cataract deductible.
That creates three common second-eye situations.
- Both eyes are treated during the same calendar year and the deductible is already met: the second procedure will generally be subject mainly to the applicable 20% Part B coinsurance for covered services, unless another insurer pays some or all of that share.
- The second eye is treated during the same year but some of the deductible remains: the unpaid portion of the deductible is applied before normal Part B cost sharing.
- The first eye is treated in December and the second in January: the new year’s Part B deductible can apply to the second operation because the deductible resets annually.
The Medicare 2026 cost schedule confirms a $283 annual Part B deductible and states that beneficiaries usually pay 20% of the cost of covered Part B services after satisfying it.
A Simple Second-Eye Cost Example
Suppose your second-eye operation is routine CPT 66984 surgery at an ambulatory surgical center and the Medicare-approved total happens to match the 2026 national average of approximately $1,717.
Scenario 1: Your Part B deductible is already satisfied. Twenty percent of $1,717 is approximately $343, which corresponds closely to Medicare’s published national-average patient payment.
Scenario 2: You have not paid any of the $283 Part B deductible. A simplified estimate would first apply the $283 deductible, leaving $1,434. Twenty percent of the remaining amount is about $287. Adding the deductible produces an estimated responsibility of roughly $570.
This is an illustration, not a quote. Medicare processes claims individually, and your actual allowed amounts and sequence of claims may differ.
Why an ASC Can Cost Less Than a Hospital Outpatient Department
Facility choice can make a noticeable difference even when the surgeon performs essentially the same cataract procedure.
For CPT 66984, Medicare’s 2026 national averages show an approved total of approximately $1,717 in an ambulatory surgical center compared with approximately $2,819 in a hospital outpatient department. The corresponding average patient payments shown by Medicare are about $343 and $563.
That does not mean an ASC is appropriate for every patient. Your eye condition, other medical conditions, required equipment and surgeon’s recommendations can influence where surgery should be performed. The useful financial question is simply: Which facility is being used for my second eye, and what is my estimated Medicare-approved responsibility there?
Does Medicare Pay for the Second Intraocular Lens?
Standard cataract surgery normally replaces the cloudy natural lens with an artificial intraocular lens, or IOL. Medicare Part B may cover the conventional IOL associated with covered cataract surgery.
The financial picture changes when you choose refractive features designed to correct presbyopia or astigmatism. CMS’s current Medicare Vision Services guidance explains that Medicare covers a conventional implantable IOL but does not pay for the additional functionality associated with presbyopia- or astigmatism-correcting IOLs.
In practical terms, choosing a premium lens in the second eye can create a patient-paid upgrade cost even though the underlying medically necessary cataract extraction remains covered. Ask the practice to separate the Medicare-covered surgery from every elective lens or refractive charge in writing.
If your surgeon is discussing different implants for the second eye, the site’s comparison of monofocal, multifocal and toric IOLs provides additional background on what those lens categories are intended to do.
Can the Second Eye Cost More Than the First?
Yes. The second surgery can cost more out of pocket even when the procedure itself is similar.
- A new calendar year begins. A fresh Part B deductible can apply.
- The second eye requires a more complex operation. The procedure and allowed charges may differ from routine cataract surgery.
- You use a different type of facility. Hospital outpatient costs can differ substantially from ASC costs.
- You choose a different IOL. Elective presbyopia- or astigmatism-correcting features can create additional patient-paid charges.
- Additional tests or services are billed. Not everything offered as part of a cataract package is necessarily included in Medicare’s payment for the standard operation.
- Your insurance arrangement changes. Medigap, employer retiree coverage or a Medicare Advantage plan can materially alter what reaches you as a bill.
Can the Second Eye Cost Less Than the First?
It can. One common reason is that the first operation, earlier medical services or other Part B care already satisfied your annual deductible.
If your first cataract surgery occurred early in 2026 and used up the remaining Part B deductible, a second surgery later in 2026 would not normally trigger a second $283 deductible. You would still have the applicable coinsurance unless supplemental coverage pays it.
Likewise, a Medigap policy may pay some of the Original Medicare cost sharing for covered services, depending on your policy. Medicare explains that Medigap policies can help with Original Medicare deductibles, copayments and coinsurance, although the exact benefit depends on the policy you have.
What Changes If You Have Medicare Advantage?
The $343 and $563 figures above are Original Medicare estimates, not universal Medicare Advantage prices.
A Medicare Advantage plan must cover medically necessary services that Original Medicare covers, but the plan can use its own copayments, coinsurance, provider network and authorization rules. Medicare notes that Advantage members may need prior authorization for services that would not normally require prior authorization under Original Medicare.
Before the second operation, ask the plan four specific questions: Is the surgeon in network? Is the surgical facility in network? Is prior authorization required for the second eye? What is my copayment or coinsurance for outpatient cataract surgery at this specific facility?
Do You Get Another Medicare Eyeglass Benefit After the Second Eye?
This is one of the more useful differences between Medicare’s ordinary eyewear rules and its post-cataract rules.
Medicare states that Part B covers one pair of eyeglasses with standard frames or one set of contact lenses after each cataract surgery that implants an intraocular lens. After the deductible, you generally pay 20% of the Medicare-approved amount for qualifying corrective lenses, and you pay additional costs for upgraded frames.
The supplier matters, too. Medicare requires the qualifying glasses or contact lenses to come from a supplier that participates in Medicare.
For more detail on coordinating eyewear when the two surgeries are performed on different dates, see Medicare glasses after cataract surgery. The site’s separate guide to Medicare refraction coverage is also useful because Medicare’s post-cataract eyewear benefit should not be confused with coverage of the refraction used to determine an eyeglass prescription.
Should You Schedule Both Eyes Before December 31 to Save the Deductible?
There can be a financial advantage to keeping medically appropriate staged procedures within the same calendar year after the Part B deductible has been met. But the surgery date should not be chosen on deductible mathematics alone.
The second eye still needs to be ready for surgery, and your ophthalmologist may want to evaluate the first eye’s recovery, visual result and refractive stability before proceeding. CMS cataract coverage policies identify factors such as the second eye’s visual function, the first eye’s stability, the patient’s visual needs and the need to evaluate early postoperative complications when considering the interval between staged surgeries.
A useful approach is to ask your surgeon first what interval is clinically appropriate. Once you know the medically reasonable date range, you can then check whether crossing January 1 would change your deductible exposure.
What to Ask for Before Scheduling the Second Eye
You do not need to become a Medicare billing specialist. You need a few precise numbers.
- What procedure is expected for my second eye?
- Will it be performed at an ambulatory surgical center or hospital outpatient department?
- Does the surgeon accept Medicare assignment?
- Does the facility accept Medicare assignment?
- How much of my 2026 Part B deductible remains?
- What is my estimated Medicare responsibility for the surgeon and facility?
- Are anesthesia or other professional services billed separately?
- Which tests are medically necessary and Medicare-covered?
- Am I choosing any noncovered refractive or premium IOL features?
- Can you give me the covered and elective charges as separate written amounts?
Those questions turn a vague statement such as “Medicare covers the surgery” into something far more useful: an estimate of what you will actually owe.
The Bottom Line
Second-eye cataract surgery generally carries its own Medicare Part B cost sharing. In 2026, Original Medicare has a $283 annual Part B deductible, followed by the usual 20% coinsurance for covered services. Medicare’s national averages for routine CPT 66984 cataract surgery show approximately $343 in patient costs at an ambulatory surgical center and $563 in a hospital outpatient department when looking at the standard 20% share.
The second eye becomes especially interesting financially when the surgeries straddle two calendar years. If your deductible was already satisfied for the first eye and the second operation occurs before year-end, you generally do not pay a second annual Part B deductible. If the second operation occurs after January 1, the new year’s deductible can apply.
Do not move a medically appropriate surgery simply to chase a deductible, but do ask about timing once your ophthalmologist has established a safe clinical window. Then compare the facility, your remaining deductible, supplemental coverage and any premium IOL charges. Those four details usually explain most of the difference between the first-eye bill and the second-eye bill.