No, Medicare does not require a physical before cataract surgery. Under Medicare’s national coverage rules, the only routine pre-surgical testing covered and expected is a comprehensive eye examination and a single scan to measure your eye for the replacement lens. A general head-to-toe physical is not part of that requirement. Your surgeon may still ask for targeted medical clearance if you have a specific health condition that warrants it, and that is a different thing from a routine physical.
What Medicare Actually Requires Before Surgery
The national coverage determination for cataract surgery covers one comprehensive eye examination and one scan to calculate the correct power for your replacement lens. For most cataracts, that scan is a diagnostic ultrasound A-scan. If your cataract is particularly dense, a B-scan may be used instead. Beyond those two things, Medicare does not routinely cover additional pre-surgical testing when the only diagnosis is cataracts.1Centers for Medicare & Medicaid Services. National Coverage Determination 10.1 – Use of Visual Tests Prior to and General Anesthesia During Cataract Surgery
The comprehensive eye exam typically includes visual acuity testing, a slit-lamp examination of the front of the eye, and a dilated exam of the retina and optic nerve. Biometry measurements of your eye’s length and corneal curvature determine which replacement lens will give you the best vision after surgery. The accuracy of those measurements affects your visual outcome directly, which is why this step matters more than any blood test would.
If your ophthalmologist identifies another eye condition during the exam, Medicare will cover additional diagnostic tests as long as the medical need is documented. And because cataract surgery is elective, you can schedule it at your convenience or switch surgeons; if you change surgeons, the new one may reasonably repeat the eye exam.1Centers for Medicare & Medicaid Services. National Coverage Determination 10.1 – Use of Visual Tests Prior to and General Anesthesia During Cataract Surgery
When a Surgeon Might Still Ask for Medical Clearance
Even without a Medicare requirement, your surgeon has discretion to request targeted medical testing based on your health history. The American Academy of Ophthalmology’s Choosing Wisely recommendation is that preoperative medical tests should only be ordered when your history or examination gives a specific reason for them. Someone with heart disease may need an EKG. A patient with diabetes may need a blood glucose check. If you take diuretics, a potassium test could be appropriate.
The guidance traces back to a study published in the New England Journal of Medicine in 2000, which found that routine preoperative medical testing before cataract surgery did not measurably improve safety. Subsequent reviews reached the same conclusion. The medical consensus that came out of that work is broad: for a procedure done under local anesthesia with light sedation, blanket labs and physicals add cost without reducing risk.
So if your surgeon’s office tells you that you need a physical or “clearance” from your primary care doctor, ask what specifically concerns them about your health. A visit focused on evaluating a known condition, like uncontrolled blood pressure, is medically justified and generally covered by Medicare Part B. A routine physical with no clinical indication is a different matter, both for your time and for what Medicare will pay.
The Annual Wellness Visit Is Not the Same as Surgical Clearance
Patients often assume their Medicare Annual Wellness Visit will double as pre-op clearance. It won’t, and the billing distinction matters.
Medicare covers a free Annual Wellness Visit once every 12 months. Your doctor develops or updates a prevention plan and performs a health risk assessment, and you pay nothing when the provider accepts assignment. A routine physical exam is a separate thing, and Medicare does not cover it. You would pay the full cost out of pocket.2Centers for Medicare & Medicaid Services. Medicare Wellness Visits
Neither visit is designed to serve as surgical clearance. If your surgeon needs a targeted evaluation of a specific health concern, that should be billed as a problem-focused office visit, not as a routine physical or wellness check. Getting the billing right is what determines whether Medicare pays.
Medicare Advantage May Add Prior Authorization
If you are enrolled in a Medicare Advantage plan rather than Original Medicare, the plan must cover everything Original Medicare covers for cataract surgery. That said, Medicare Advantage plans can add their own requirements. Many require prior authorization before scheduling surgery, meaning the plan must approve the procedure in advance. Some restrict you to surgeons and facilities within their network, and going out of network could increase your costs or result in a denial.
Prior authorization is separate from any medical clearance question. Even when your surgeon has decided no pre-op medical workup is needed, your plan may still need to sign off on the surgery itself. Contact your plan before scheduling to confirm what is required on your end, and if the plan denies authorization or covers less than you expected, you have appeal rights. Sorting authorization out in advance is easier than fighting a claim denial after the fact.