Christian Simmons, writer and researcher for RetireGuide
  • Written by
    Christian Simmons

    Christian Simmons

    Financial Writer

    Christian Simmons is a writer for RetireGuide and a member of the Association for Financial Counseling & Planning Education (AFCPE®). He covers Medicare and important retirement topics. Christian is a former winner of a Florida Society of News Editors journalism contest and has written professionally since 2016.

    Read More
  • Edited By
    Savannah Pittle
    Savannah Pittle, senior financial editor for RetireGuide

    Savannah Pittle

    Senior Financial Editor

    Savannah Pittle is a professional writer and content editor with over 16 years of professional experience across multiple industries. She has ghostwritten for entrepreneurs and industry leaders and been published in mediums such as The Huffington Post, Southern Living and Interior Appeal Magazine.

    Read More
  • Published: June 30, 2021
  • Updated: October 23, 2023
  • 11 min read time
  • This page features 14 Cited Research Articles
Fact Checked
Fact Checked

Our fact-checking process starts with vetting all sources to ensure they are authoritative and relevant. Then we verify the facts with original reports published by those sources, or we confirm the facts with qualified experts. For full transparency, we clearly identify our sources in a list at the bottom of each page.

Cite Us
How to Cite's Article

APA Simmons, C. (2023, October 23). Does Medicare Cover Surgery? Retrieved June 17, 2024, from

MLA Simmons, Christian. "Does Medicare Cover Surgery?", 23 Oct 2023,

Chicago Simmons, Christian. "Does Medicare Cover Surgery?" Last modified October 23, 2023.

Why Trust
Why You Can Trust Us

Content created by RetireGuide and sponsored by our partners.

Key Principles

RetireGuide’s mission is to provide seniors with resources that will help them reach important financial decisions that affect their retirement. Our goal is to arm our readers with knowledge that will lead to a healthy and financially sound retirement.

We’re dedicated to providing thoroughly researched Medicare information that guides you toward making the best possible health decisions for you and your family.

RetireGuide LLC has partnerships with Senior Market Sales (SMS) and GoHealth.

Our partners are able to be reached through the phone numbers and/or forms provided on our website.

The content and tools created by RetireGuide adhere to strict Medicare and editorial guidelines to ensure quality and transparency.

Editorial Independence

While the experts from our partners are available to help you navigate various Medicare plans, RetireGuide retains complete editorial control over the information it publishes.

We operate independently from our partners, which allows the award-winning RetireGuide team to provide you with unbiased information.

Visitors can trust our inflexibility regarding our editorial autonomy. We do not allow our partnership to influence RetireGuide’s editorial content whatsoever.
Surgery Coverage at a Glance
Medicare PlanSurgery Coverage
Part A (Inpatient)Covers surgery and Medicare-approved costs of your hospitalization after you have reached your Part A deductible. You’ll also owe 20% of the doctor’s charges and are responsible for coinsurance costs for stays beyond 60 days.
Part B (Outpatient)Covers 80% of comprehensive outpatient surgery, plus any drugs, laboratory tests or other services you may receive, after you have reached your Part B deductible.
Part C (Medicare Advantage)Costs for surgeries vary by plan.
Part D (Prescription Drugs)N/A
Supplemental InsuranceCan help cover surgery costs not covered by Medicare. Coverage varies by plan.

Understanding Medicare Surgery Coverage

Medicare surgery coverage can be confusing to navigate and challenging to understand.

Surgery is one of several treatments covered under Medicare. A procedure must be considered medically necessary to qualify for coverage. This means the surgery must diagnose or treat an illness, injury, condition or disease or treat its symptoms.

It’s difficult to determine exactly how much you’ll owe out-of-pocket because so many factors influence surgery cost.

Original Medicare coverage is split into Parts A and B. Part A will cover inpatient surgeries and hospital stays, while Part B covers outpatient procedures. Your Medicare coverage and out-of-pocket costs are different for inpatient and outpatient surgeries.

Just because you receive surgery in a hospital does not mean that you are by default considered inpatient. Whether you are an inpatient or outpatient can play a dramatic role in your costs.

Factors That Impact Your Surgery Cost With Medicare
  • Whether the surgery is considered inpatient or outpatient.
  • Where the surgery takes place. (For example, it may be cheaper to undergo outpatient surgery at an ambulatory surgical center than in a hospital outpatient department.)
  • What part of the country you live in.
  • How many doctors perform your surgery.
  • If you have any supplement insurance, such as Medicaid or a Medigap policy.
  • If you’ve already met your Part A or Part B deductibles.
  • If treatment includes more than one procedure or if complications arise after surgery.

It is important to make sure that the doctor performing your surgery accepts Medicare assignment. This means the doctor agrees to accept the Medicare-approved cost for the procedure and won’t bill you anything besides a copayment or coinsurance fee. If your doctor does not accept Medicare, you may have to pay the entire cost.

Have you selected your 2024 Medicare plan?
Maximize your Medicare savings by connecting with a licensed insurance agent. Annual Enrollment is open until December 7th.

Surgeries and Procedures Covered Under Medicare

Original Medicare covers many surgeries and procedures. The guiding principle is that they must be medically necessary procedures. If a surgery is critical to your health or wellbeing, then Medicare will typically cover it.

Example Surgeries and Procedures Covered By Medicare
Medicare will cover a hysterectomy if the surgery is a medical necessity. This does not include undergoing the procedure to prevent future pregnancy. Any other elective reason behind receiving the surgery will also prevent it from being covered.

An outpatient laparoscopic total hysterectomy is estimated to cost Medicare beneficiaries $943 out-of-pocket at an ambulatory surgical center, while the same procedure can cost $1,669 at a hospital outpatient department, according to Medicare’s Procedure Price Lookup tool.
Total Knee Replacement
Medicare will usually cover a knee replacement surgery. Typically, a knee replacement requires you to stay in the hospital for one to four days. Medicare Part A will cover a share of certain approved costs during your stay. Part B will cover associated costs, including for doctor visits before and after surgery and physical therapy sessions.

Medicare’s Procedure Price Lookup tool estimates that a total knee replacement will cost Medicare beneficiaries $2,015 at an ambulatory surgery center versus $1,748 at a hospital outpatient department.
Medicare covers mastectomy surgery when medically necessary and used to treat breast cancer. Medicare also pays for some post-mastectomy supplies, including mastectomy bras and breast prostheses.

An outpatient partial mastectomy is estimated to cost between $389 and $761 out of pocket, according to Medicare’s Procedure Price Lookup tool. In contrast, a modified radical mastectomy — a more complex version that involves removing the lymph nodes and some chest muscles — averages between $694 and $1,350.
Medicare covers most of the costs of anesthesia for surgery. Costs are covered through Part A if you are and inpatient and under Part B if you are an outpatient or in an ambulatory surgical center. You may still be responsible for a portion of the Medicare-approved costs, and you may have to pay an additional copayment to the facility.
Gender-Confirmation Surgery
Medicare covers gender-confirmation surgeries on a case-by-case basis.

Does Medicare Cover Outpatient Surgery?

Outpatient surgery refers to a procedure a doctor performs without formally admitting you into the hospital. Outpatient procedures usually take place in a doctor’s office, an ambulatory surgical center or a hospital.

Medicare Part B covers outpatient surgery. Typically, you pay 20% of the Medicare-approved amount for your surgery, plus 20% of the cost for your doctor’s services.

The Part B deductible applies ($240 in 2024), and you pay all costs for items or services Medicare doesn’t cover.

You usually also pay the hospital a facility fee copayment and 20% for each service you receive in a hospital outpatient setting.

Medicare Costs Associated with Outpatient Surgery
  • You pay 20% of the total cost.
  • You must meet your Part B deductible.
  • You may be required to pay a copayment to the hospital.

However, there’s an exception for costly surgical procedures. For these comprehensive procedures, you pay 20% of the entire cost, including the surgery plus any drugs, laboratory tests or other services you may receive.

If you are billed for separate services, your copayment for each service can’t exceed the Part A deductible ($1,632 in 2024).

Medicare’s online Procedure Price Lookup tool lets you compare average out-of-pocket costs for certain surgeries performed in both hospital outpatient departments and ambulatory surgical centers.

It’s important to note that all estimates from Medicare’s Procedure Price Lookup are based on Original Medicare coverage without supplement insurance, such as Medicaid or a Medigap policy.

These estimates also don’t apply to beneficiaries with Medicare Advantage. If you have a Medicare Advantage plan, talk to your plan provider about outpatient surgery costs.

Ambulatory Surgical Centers

As outpatient surgery grows more popular in the United States., so too have ambulatory surgical centers — non-hospital facilities where certain procedures are performed for patients who aren’t expected to need more than 24 hours of care.

According to the National Law Review, studies show that ambulatory surgical centers “offer consistently lower costs than hospitals, providing strong incentives for patients to shift their site of care.”

The U.S. Centers for Medicare & Medicaid Services (CMS) has also increased the number of procedures that can be performed at ambulatory surgery centers. A CMS outpatient payment rule added 267 additional procedures eligible for reimbursement, which started in 2021.

As is clear, where your outpatient surgery takes place matters and can significantly impact your out-of-pocket costs.

3 Minute Quiz: Can You Retire Comfortably?
Take our free quiz & match with a financial advisor in 3 easy steps.
Tailored to your goals. Near you or online.

Does Medicare Cover Inpatient Surgery?

Medicare Part A covers expenses related to inpatient hospital stays and surgeries.

Typically, you’ll receive an all-inclusive package of services when you’re admitted to the hospital and pay the Part A deductible of $1,632 for a stay of up to 60 days.

You’ll also owe 20% of the doctor’s charges.

Medicare Part A Out-of-Pocket Costs for Inpatient Hospital Stays
  • $1,632 deductible for each benefit period.
  • Days 1–60: $0 coinsurance for each benefit period.
  • Days 61–90: $408 coinsurance per day of each benefit period.
  • Days 91 and beyond: $816 coinsurance per each lifetime reserve day (up to 60 days over your lifetime).
  • Beyond lifetime reserve days: All costs.
Source: U.S. Centers For Medicare & Medicaid Services

It’s important to note that you may owe the Part A deductible multiple times in a single year.

Medicare Part A deductibles work differently than most health insurance deductibles. Usually, you have one deductible for the entire year, and you pay that amount out-of-pocket before your insurance kicks in. Then your deductible resets the following year.

Medicare Part A uses what’s known as benefit periods. A benefit period begins the day you go into the hospital and ends when you’ve been out of the hospital for 60 days in a row.

You can check your benefit period and Part A deductible by logging into your online My Medicare account. You can also find this information in your Medicare summary notice, which is mailed out every three months.

If you’re readmitted to the hospital 60 days or more after you were discharged, then a new benefit period begins, and you’ll owe the $1,632 Part A deductible again.

Medicare Advantage Coverage for Surgery

Medicare Advantage plans are administered by private companies that contract with the federal government. Plans must include the same basic care as Original Medicare but often bundle other benefits — such as vision and dental — into a single plan.

Medicare Advantage plans may require you to use hospitals and doctors within the plan’s network for your surgery. Prior authorization is usually required.
Medicare Advantage plans may also have different deductibles, coinsurance and copayments for surgery than Original Medicare.

For example, the AARP Medicare Advantage Choice (PPO) plan features a $295 per day coinsurance payment for inpatient hospital care (days one through six). This is in addition to the standard Medicare Part A deductible of $1,632 in 2024.

After day six, there are no coinsurance payments with this plan.

A different Medicare Advantage plan — UnitedHealthcare Dual Complete® RP (Regional PPO D-SNP) — features $0 copayments for each Medicare-covered hospital stay for unlimited days, as long as the hospital is within the plan’s network.

In contrast, Original Medicare’s inpatient hospital policy features a $0 coinsurance payment for the first 60 days of inpatient care after you meet the Part A deductible.

Contact your specific Medicare Advantage plan’s customer service department or consult your annual evidence of coverage manual for details about inpatient and outpatient surgery coverage.

Never Miss Important News or Updates with Our Weekly Newsletter
Get money-saving tips, hard-to-find info and tactics for a successful retirement in our free weekly newsletter.

How To Estimate Your Surgery Cost With Medicare

Talking to your doctor and health care team about costs prior to surgery is a good way to avoid surprise billing.

Call the hospital or facility and ask them to tell you about the copayment for the specific surgery or procedure your doctor will perform. Ask if they charge a facility fee.

Make sure to also ask your doctor, surgeon or other health care provider what kind of care or services you may need after your procedure — along with a cost estimate.

Questions to Ask Your Doctor Prior to Surgery
  • Is this procedure covered by Medicare?
  • Which hospitals or ambulatory surgical centers do you work with when you perform this type of procedure?
  • Which facility is the best place for me to get this surgery?
  • Does the facility you recommend participate in Medicare?
  • Do I need permission (such as prior authorization or a referral) before my operation?

While it’s important to get an estimate in advance of non-emergency surgery, it’s also important to understand that estimates are not always accurate. In fact, according to Kaiser Health News, hospital estimates are often inaccurate and there is no legal obligation that they be correct.

But even if your bill ends up higher than expected, having an estimate is useful. It can help you make the argument with your provider and Medicare that you shouldn’t be charged more than you expected.

Surgical Procedures Not Covered Under Medicare

A surgery must be considered medically necessary to qualify for Medicare coverage.

Investigational procedures typically aren’t covered.

Medicare generally won’t cover cosmetic surgery either unless it repairs an accidental injury or improves the function of a malformed body part.

For example, rhinoplasty to correct a malformed nasal passage and chronic breathing issues can simultaneously improve the appearance of your nose. Or a procedure that removes excessive eye skin to improve vision may also make your eyelids appear less droopy.

Examples of Cosmetic Procedures Covered by Medicare
  • Surgery to treat severe burns.
  • Surgery to repair the face after a serious car accident.
  • Therapeutic surgery that coincidentally serves a cosmetic purpose.

It’s important to note that Medicare does cover breast reconstruction procedures following a mastectomy or lumpectomy. Medicare doesn’t consider these procedures to be cosmetic surgeries.

FAQs About Surgery Costs with Medicare

How long does it take Medicare to approve a surgery?
It can take up to 30 days for Medicare to approve an elective surgical procedure. If the surgery is medically necessary, you do not need prior approval.
Does Medicare cover elective surgery?
Medicare only covers medically necessary surgery and does not cover elective surgery unless it addresses a medical need.
Can Medicare deny a surgical procedure?
Some procedures are not covered by Medicare and will be denied. Medicare can deny a surgical procedure if it determines that the surgery was not medically necessary. You or your caregiver can appeal the denial or appeal Medicare’s denial of payment for the procedure.

Connect With a Financial Advisor Instantly

Our free tool can help you find an advisor who serves your needs. Get matched with a financial advisor who fits your unique criteria. Once you’ve been matched, consult for free with no obligation.

Last Modified: October 23, 2023

14 Cited Research Articles

  1. U.S. Centers for Medicare & Medicaid Services. (2022, September 27). 2023 Medicare Parts A & B Premiums and Deductibles 2023 Medicare Part D Income-Related Monthly Adjustment Amounts. Retrieved from
  2. Yood, K., Gertler, M. R. and Stobaugh, A. R. (2021, May 20). Biden’s American Rescue Plan Follows Trend Toward Outpatient Setting, Increase in ASC Investment. Retrieved from
  3. King, R. (2021, April 5). COVID-19 Accelerates Trend of Hospitals Acquiring Ambulatory Surgery Centers. Retrieved from
  4. Jaffe, S. (2021, March 23). Under New Cost-Cutting Medicare Rule, Same Surgery, Same Place, Different Bill. Retrieved from
  5. U.S. Centers for Medicare & Medicaid Services. (2020, December). Items & Services Not Covered Under Medicare. Retrieved from
  6. OR Manager. (2020, November 17). Shifts In Case Mix Bode Well for Future of Outpatient Surgery. Retrieved from
  7. (2020, February 26). Paying for Reconstruction Procedures. Retrieved from
  8. UnitedHealthcare. (2020). Evidence of Coverage: UnitedHealthcare Dual Complete® RP (Regional PPO D-SNP). Retrieved from
  9. Bluth, R. (2019, August 30). They Got Estimates Before Surgery — And A Bill After That Was 50% More. Retrieved from
  10. U.S. Centers for Medicare & Medicaid Services. (2019, July). Learning What Medicare Covers & How Much You Pay. Retrieved from
  11. Freeman, W. J., Weiss, A. J. and Heslin, K. C. (2018, December). Overview of U.S. Hospital Stays in 2016: Variation by Geographic Region. Retrieved from
  12. U.S. Centers for Medicare & Medicaid Services. (n.d.). Inpatient Hospital Care. Retrieved from
  13. U.S. Centers for Medicare & Medicaid Services. (n.d.). Surgery. Retrieved from
  14. U.S. Centers for Medicare & Medicaid Services. (n.d.). Which Facility Is Best For My Outpatient Procedure? Retrieved from