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Will insurance pay for a second opinion?

Two people with the same surgical recommendation can face different coverage rules, depending on the plan behind each card. Original Medicare has its own, and other plans can have network, referral and approval steps.

Arun Verma, co-founder of Triangle · 2026-10-17

This is not clinical evidence and not medical advice. It does not replace your care team. Discuss anything here with your clinician before you act on it.

Will insurance pay for a second opinion?

It depends on your coverage. Medicare.gov says Original Medicare Part B covers a second opinion in some cases, for medically necessary, non-emergency surgery. Private plans and Medicare Advantage plans can have rules about networks, referrals and prior approval. A fair first question for a plan is whether a second opinion from the doctor you have in mind is covered, and which steps come first.

What does Original Medicare cover for a second opinion?

In some cases, Part B covers a second opinion for medically necessary, non-emergency surgery, and Medicare.gov says Medicare also covers a third opinion if the first two differ. After you meet the Part B deductible, you pay 20% of the Medicare-approved amount for each. If the second doctor asks for more tests, Medicare covers them as it covers other medically necessary services. Surgery that isn't medically necessary, such as cosmetic surgery, is outside that coverage, and CMS's booklet says Medicare won't pay for second opinions about it either. The booklet also tells readers to make sure the second doctor accepts Medicare. Medicare.gov adds that what you owe can also depend on other insurance, what your doctor charges, whether your doctor accepts assignment, the type of facility and where you get the service.

Does a Medicare Advantage plan cover a second opinion?

CMS's booklet says a Medicare Advantage plan gives you the right to a second opinion, but some plan rules can apply. If the first two opinions differ, it says, your plan will help pay for a third. It also says some plans will only help pay for a second opinion with a referral from your primary care doctor, and some only for a doctor in the plan's provider network. Costs and rules, including whether you need a referral to see a specialist, vary by plan and can change each year, according to CMS's Medicare Advantage guide. A fair question for your plan is which of these rules apply to a second opinion under your plan.

How do network rules affect a second opinion?

A second doctor outside your plan's network can cost more, and some plans pay nothing for it. A network is the facilities, providers and suppliers your plan has contracted with, HealthCare.gov says, and you'll pay more to see a provider outside it. NAIC adds that some plans don't pay anything for non-network care unless it's an emergency. The plan type shapes this. Among Marketplace plan types, HealthCare.gov says an HMO usually limits coverage to doctors who work for or contract with it and generally won't cover out-of-network care except in an emergency, while a PPO lets you go outside the network for an additional cost. CMS's provider-network fact sheet describes the same split for Medicare Advantage: in HMO plans you generally must use network providers, with exceptions such as emergency care, and in PPO plans you can go outside the network but you'll usually pay more.

Do referral and prior-authorization rules apply to second opinions?

They can, depending on the plan. A referral is a written order from your primary care doctor to see a specialist or get certain medical services, HealthCare.gov says, and in many HMOs a missing referral means the plan may not pay. Its plan-types page adds that Point of Service plans require you to get a referral from your primary care doctor in order to see a specialist. HealthCare.gov defines preauthorization, also called prior authorization, prior approval or precertification, as your plan's decision that a service is medically necessary. It says plans may require it for certain services before you receive them, except in an emergency, and that it isn't a promise the plan will cover the cost. NAIC says that when a referral or prior authorization is required, the plan may not pay any of the costs without it. Original Medicare is different: Medicare.gov says that in most cases you don't need a referral to see a specialist or approval for Medicare to cover your services, while Medicare Advantage plans may require both. Outside Original Medicare, the only cited page that speaks to second opinions specifically is CMS's booklet, which names referral and network rules for some Medicare Advantage plans; none of the cited pages says whether a private plan requires prior authorization for one.

What should I have ready for a second opinion visit?

CMS's booklet lists four steps before the visit: asking the first doctor to send your medical records to the second doctor, so you may not have to repeat tests; calling the second doctor's office to confirm it has them; writing down a list of questions to take; and asking a family member or friend to go with you. At the visit, the booklet says you tell the second doctor what surgery the first doctor recommended and which tests you already had. NAIC says that if prior authorization is required, the plan will likely need medical records from your provider. A fair question for the first doctor's office is how records get sent and how long that usually takes.

What could I ask my plan before booking?

You could ask whether the second doctor is in network, what you'd pay in and out of network, whether a second opinion needs a referral or prior authorization, and whether a third opinion is covered if the first two differ. CMS's provider-network fact sheet for Medicare Advantage members lists the network questions: how to find out if your providers are in the plan's network, what you pay in and out of network, and what happens if you need covered treatment that no network provider offers. For the referral and prior-authorization questions, NAIC says that when it's not an emergency, the plan's website, documents or phone line can answer whether a service needs either one.

What if the plan denies prior authorization?

NAIC says you can appeal a health plan's prior authorization decision, and that the step before an appeal is a call to the plan to learn why it was denied, since a simple error such as missing information might be a quick fix. NAIC also points to your state insurance department for guidance on appeals and complaints. CMS's Medicare Advantage guide says that if a plan doesn't approve a prior authorization request, you may have to pay the full cost of the service.

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