The short answer
Yes — Medicare covers a second opinion when you're facing surgery or a major medical treatment, because getting a second professional view before a big decision is considered reasonable and necessary care. If your first and second opinions disagree, Medicare will also help pay for a third opinion.
This is genuinely useful to know. A lot of people assume asking for a second opinion is a hassle they'll pay for out of pocket, so they skip it before a consequential procedure. Medicare is designed to encourage exactly the opposite.
How it works under Original Medicare
Under Original Medicare, a second opinion is a Part B service like any other doctor visit — you owe the deductible and 20% coinsurance unless a supplement covers it. You can see any doctor who accepts Medicare, so you're free to choose a specialist you trust for that second view.
That freedom is one of Original Medicare's strengths: no referral needed, no network to stay inside. Our Medicare basics overview explains how Part B cost-sharing works for visits like this.
How it works under Medicare Advantage
With a Medicare Advantage plan, a second opinion is still covered, but you'll generally want to stay in the plan's network to get the in-network cost, and some plans may require a referral. It's worth a quick check of your plan's rules before you book, so the visit is covered the way you expect.
The takeaway is the same either way: don't skip a second opinion before surgery because you're worried it isn't covered. It is. Our Medicare Advantage overview covers how networks and referrals affect visits like this.
Frequently Asked Questions
Does Medicare pay for a second opinion?
Yes. Medicare covers a second opinion before surgery or a major treatment, and a third opinion if the first two disagree, because it's considered reasonable and necessary care.
Do I need a referral for a second opinion?
Under Original Medicare, no — you can see any doctor who accepts Medicare. Some Medicare Advantage plans may require a referral and prefer you stay in network.
What does a second opinion cost on Medicare?
Under Original Medicare it's a Part B visit with 20% coinsurance after the deductible, unless a Medigap plan covers it. Under Medicare Advantage you typically pay your plan's specialist copay.
Will Medicare cover a third opinion?
Yes, if your first and second opinions differ, Medicare will help pay for a third opinion to help you decide.
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