Core Insurance Solutions
    By Core Insurance SolutionsOctober 26, 2026
    Vaccine Coverage Under Medicare: What Part B and Part D Pay For

    Vaccine Coverage Under Medicare: What Part B and Part D Pay For

    Medicare covers most adult vaccines you are likely to need, and for the large majority you pay nothing out of pocket. Part B pays for flu, pneumococcal (pneumonia), COVID-19 and, for people at intermediate or high risk, hepatitis B shots. Part D pays for other recommended vaccines such as RSV, Tdap and shingles. The part that trips people up is not whether a shot is covered. It is which part of Medicare pays, and where you get the shot.

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    TL;DR

    • Part B covers flu, pneumococcal and COVID-19 vaccines, plus hepatitis B for those at intermediate or high risk. You pay nothing if the provider accepts assignment.
    • Part D covers other commercially available vaccines, including RSV, Tdap and shingles, with no deductible or copayment for ACIP-recommended adult vaccines.
    • Where you get the shot matters. A pharmacy in your plan’s network is usually the smoothest route for Part D vaccines; a doctor’s office may need to bill differently.
    • Travel vaccines can be covered under Part D when they are ACIP-recommended, but you should confirm with your plan first.
    • You need drug coverage to have Part D vaccine protection, whether through a stand-alone plan or a Medicare Advantage plan that includes drugs.

    Table of Contents

    The basic split: Part B vaccines and Part D vaccines

    Medicare sorts vaccines into two buckets, and the bucket decides which card you hand over and which plan processes the claim.

    According to the CMS fact sheet on Part D vaccines, Part B covers flu, pneumococcal and COVID-19 vaccines, and hepatitis B vaccines for people at intermediate or high risk. It also covers certain vaccines given because of an injury or exposure to a disease. Part D covers other commercially available vaccines when they are reasonable and necessary to prevent illness.

    Here is the practical version:

    Vaccine Which part pays Typical cost to you
    Flu shot Part B $0 if the provider accepts assignment
    Pneumococcal (pneumonia) Part B $0 if the provider accepts assignment
    COVID-19 Part B $0 if the provider accepts assignment
    Hepatitis B (intermediate or high risk) Part B $0 if the provider accepts assignment
    RSV Part D $0 with Part D or a Medicare Advantage plan with drug coverage
    Tdap (tetanus, diphtheria, pertussis) Part D $0 for ACIP-recommended adult vaccines
    Shingles Part D $0 for ACIP-recommended adult vaccines
    Travel vaccines (ACIP-recommended) Part D $0, but confirm with your plan

    The CMS fact sheet states that adult ACIP-recommended vaccines under Part D, and Part B vaccines, carry no patient cost-sharing. ACIP is the CDC’s Advisory Committee on Immunization Practices. As KFF explains, Part D vaccine coverage requirements are tied to ACIP recommendations as adopted by the CDC Director, while Part B vaccine coverage is set by statute rather than following every ACIP recommendation automatically. That is why the Part B list is short and fixed, and the Part D list can grow as recommendations change.

    Flu shot coverage

    The flu shot is the most searched vaccine question, and the answer is simple. Medicare.gov says Part B covers the seasonal flu vaccine, usually once each flu season, and you pay nothing if your doctor or other health care provider accepts assignment.

    Two details are worth knowing:

    • Assignment is the word that matters. A provider who accepts assignment agrees to take the Medicare-approved amount as payment in full. Ask when you book, or ask at the pharmacy counter, before the shot goes in your arm.
    • You do not need a doctor’s order. Under Medicare rules, influenza and pneumococcal vaccines do not require a physician’s order or supervision, although state law can differ. That is why pharmacies and clinics can give them without a visit.

    Pneumonia (pneumococcal) vaccine

    Pneumococcal vaccines fall under Part B, so the same no-cost-sharing rule applies when the provider accepts assignment. If you have been told you are “due” for a pneumonia shot, ask your doctor or pharmacist which pneumococcal vaccine you are being offered and whether you have had one before. Your vaccine history, not your age alone, determines what is recommended, and your doctor is the right person to sort that out.

    RSV vaccine coverage

    “Does Medicare cover the RSV vaccine?” is the single largest question in this topic, and the answer is yes, through Part D. Medicare.gov states that Part D covers the RSV vaccine at no cost to beneficiaries with Part D, and that Medicare Advantage plans that include drug coverage also cover it.

    Who is the shot meant for? The CDC’s adult RSV guidance recommends one dose for every adult age 75 or older, and one dose for adults ages 50 to 74 who are at increased risk of severe RSV illness. Whether you count as increased risk depends on your health conditions, so ask your doctor or pharmacist.

    Medicare.gov notes that RSV vaccines are available in many places, including doctors’ offices and local pharmacies. For most people the pharmacy is easier, for reasons covered below.

    Tdap and other Part D vaccines

    Tdap protects against tetanus, diphtheria and whooping cough. Under Medicare it is a Part D vaccine when given preventively. The CMS fact sheet says it is covered when reasonable and necessary to prevent illness.

    There is one wrinkle. If you get a tetanus shot because of an injury, such as stepping on a rusty nail, the shot is treated as treatment related to the injury and is a Part B matter. A routine booster is a Part D matter. The difference is the reason for the shot, and the claim should be coded accordingly.

    Shingles works like Tdap and RSV. The National Council on Aging notes that Congress eliminated cost-sharing for vaccines covered under Part D, so Medicare now covers the entire cost of the shingles vaccine and others recommended by ACIP. Shingles is a two-dose series, so plan for the second visit.

    Hepatitis B and COVID-19

    Hepatitis B has been a Part B vaccine for people at intermediate or high risk. The AAFP coding guide reports that, as of January 1, 2025, hepatitis B vaccines are paid like other Part B preventive vaccines and are not subject to the Part B deductible or coinsurance. Hepatitis B is the one Part B vaccine that must be given under a physician’s order and supervision, so a pharmacy walk-in may not be the right door.

    COVID-19 vaccines are covered under Part B. Eligibility and recommendations change from season to season, so check the CDC’s current guidance and ask your provider what applies to you this year.

    Do travel vaccines count?

    Sometimes, and this is where people expect a “no” and get a “yes.” Medicare.gov’s travel page explains that Part D covers ACIP-recommended vaccines, including certain vaccines that may be needed before travel outside the United States, such as yellow fever, chikungunya and Japanese encephalitis. The plan does not charge a copayment or deductible for ACIP-recommended vaccines.

    Three cautions before you book a trip:

    1. Talk to a clinician first. Which vaccines you need depends on where you are going, for how long, and your health.
    2. Call your plan. Some travel vaccines are stocked only at certain clinics or pharmacies, and the plan can tell you where to go.
    3. Allow time. Some vaccines are given in a series or need weeks to take effect, so do not wait until the week before departure.

    A vaccine that is not ACIP-recommended for adults is a different story, and coverage can be limited. Ask the plan before you pay.

    Where you get the shot decides what you pay

    This is the section most guides skip, and it is where surprise bills come from.

    Part B vaccines. Participating and nonparticipating physicians must accept assignment of the Medicare vaccine payment rate. But the AAFP guide points out that nonparticipating physicians may choose not to accept assignment on the administration fee, which can leave you responsible for the difference between the charge and what Medicare allows. The fix is a one-line question: “Do you accept Medicare assignment?”

    Part D vaccines. These are processed through your drug plan, not Original Medicare. A pharmacy in your plan’s network can usually bill the plan at the counter, so you leave with a $0 receipt. If you get a Part D vaccine at a doctor’s office, the office may not be able to bill your drug plan directly, and you could be asked to pay up front and file for reimbursement. Ask first, or go to an in-network pharmacy.

    Part D vaccine billing at pharmacies and doctors’ offices

    Formulary worries. The CDC says that even if a plan’s formulary does not explicitly list every Part D vaccine, the plan must provide access when a physician prescribes one. If a pharmacy tells you a vaccine “isn’t covered,” call the number on your plan card before paying.

    What about Medicare Advantage and no drug coverage?

    If you are in a Medicare Advantage plan, Part B vaccines are covered by the plan. Most Advantage plans also include drug coverage, which handles the Part D vaccines. As Medicare.gov says for RSV, Advantage plans that include drug coverage cover it. The catch is network rules: your plan may want you to use specific pharmacies or providers.

    If you have Original Medicare and no Part D plan, you have Part B vaccines but not the Part D ones. That means RSV, Tdap and shingles could cost you the full price. Our guide to what Medicare Part D is and how formularies and penalties work covers why going without drug coverage can cost more later. For Part B basics, see what Medicare Part B covers.

    A simple pre-shot checklist

    Before any vaccine appointment, run through this:

    1. Name the vaccine. Flu, pneumococcal, COVID-19 and hepatitis B are Part B. Almost everything else is Part D.
    2. Know which plan you will bill. Original Medicare card for Part B; drug plan card for Part D.
    3. Ask about assignment for Part B vaccines.
    4. Ask whether the pharmacy is in network for Part D vaccines.
    5. Keep a record of what you received and when, especially for series like shingles.
    6. Check your Explanation of Benefits or Medicare Summary Notice. A vaccine that should be $0 showing a charge is worth a phone call.

    Perspective: what we see with local seniors

    In our work with seniors in Lakeland and across Polk County, vaccine coverage is rarely the reason someone picks a plan, but it is often the reason someone gets a surprise bill. The pattern is consistent: a person assumes “Medicare covers it,” gets a shot at the wrong place, and is asked to pay.

    We treat vaccines as part of a larger health needs assessment. Your vaccine plan is one input, alongside your doctors, your medications and your budget. A person who takes several prescriptions has a different priority list than one who rarely sees a doctor, and the plan that fits one may not fit the other. Because we compare plans across carriers rather than sell one product, we look at whether your pharmacy is in network, how your drug plan treats your medications, and whether the Part D side of your coverage works as well as the medical side.

    Our advice is practical. Ask before you roll up your sleeve, use an in-network pharmacy for Part D vaccines, and review your coverage every year, since plans and networks change at each enrollment period. If a vaccine claim is denied or billed incorrectly, that is something we can help you sort out.

    — Core Insurance Solutions

    Get help matching your vaccines to the right plan

    If you are turning 65 or reviewing your coverage, we can look at how your current or prospective plans handle drug coverage, pharmacy networks and the medications you take. Our services include a health needs assessment, unbiased carrier comparison, prescription cost optimization, annual policy reviews and claims advocacy, at no direct cost to you. We do not offer every plan available in your area, so please contact Medicare.gov or 1-800-MEDICARE for information on all your options. If you would rather start by learning the basics, our Medicare enrollment timeline shows when you can sign up.

    FAQ

    Does Medicare cover the flu shot every year?

    Yes. Part B covers the seasonal flu vaccine, usually once each flu season. You pay nothing if your doctor or other provider accepts assignment. Ask about assignment before you get the shot.

    Does Medicare cover the Tdap vaccine?

    Yes, through Part D when it is given preventively. Adult ACIP-recommended vaccines under Part D have no patient cost-sharing. If the shot is given because of an injury, it is billed differently, so tell the provider why you need it.

    Does Medicare cover the RSV vaccine?

    Yes. Part D covers it at no cost to you, and Medicare Advantage plans that include drug coverage cover it too. The CDC recommends one dose for all adults 75 and older and for adults 50 to 74 at increased risk of severe RSV illness. Ask your doctor or pharmacist whether you qualify.

    Does Medicare cover travel vaccines?

    Often, under Part D, when the vaccine is ACIP-recommended, such as yellow fever, chikungunya or Japanese encephalitis. There is no copayment or deductible for those vaccines. Confirm the details with your plan and a clinician before you travel.

    Why was I billed for a vaccine that should be free?

    The most common reasons are getting a Part D vaccine at an out-of-network pharmacy or a doctor’s office that cannot bill your drug plan, or seeing a Part B provider who does not accept assignment. Call your plan, ask for the claim to be reviewed, and contact us if you want help resolving it.

    Sources

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