What Is Prior Authorization in Health Insurance? A Plain-English Guide

Prior authorization, in plain English

Prior authorization is approval your health plan may require before it will cover certain medical services, treatments, equipment, or prescriptions. You may also hear it called preauthorization, prior approval, or precertification.

The important part is what prior authorization is not: it is not a guarantee that your final bill will be paid in full. Your deductible, copay, coinsurance, network rules, medical-necessity requirements, and other plan terms can still affect what you owe.

How prior authorization works

Say your doctor recommends an MRI. Before scheduling it, the health plan may require your doctor's office to submit information explaining why the MRI is medically necessary. The insurer reviews that request and typically does one of three things:

• Approves it. The plan authorizes the requested service, usually for a defined period or set of circumstances.

• Asks for more information. The insurer may need records, test results, clinical notes, or other documentation before making a decision.

• Denies it. The plan decides the request does not meet its coverage or medical-necessity requirements as submitted.

If your plan requires prior authorization and it is skipped, the claim may be denied or covered differently. That is why this is something worth checking before a non-emergency procedure, test, treatment, or expensive medication whenever possible.

What services commonly need prior authorization?

There is no universal list. Requirements vary by insurer, plan, service, and sometimes the specific circumstances of your care. But prior authorization is commonly associated with higher-cost or more specialized care, including:

• Advanced imaging such as certain MRIs, CT scans, or PET scans

• Planned surgeries and some outpatient procedures

• Certain hospital admissions or specialized treatments

• Some specialty medications and higher-cost prescriptions

• Durable medical equipment

• Some therapies or services after a certain number of visits

Do not assume that because a service was covered for someone else, or covered under your old plan, your current plan handles it the same way. The safest answer comes from the current plan documents and the insurer.

Prior authorization vs. a referral

These two get confused constantly, but they are different.

• Prior authorization is generally permission from the health plan for a particular service, treatment, drug, or item to be covered under the plan's rules.

• A referral is typically an instruction or authorization from one provider, often your primary care physician, to see another provider such as a specialist.

Depending on the plan, you may need one, both, or neither. PPOs, HMOs, EPOs, and other network designs can handle referrals and prior authorization differently, so the network type alone does not tell you the whole answer.

Does prior authorization mean insurance will pay?

No. This is one of the most important details to understand.

Prior authorization means the insurer has reviewed the request under its authorization process. It does not erase the rest of your policy. Coverage can still depend on factors such as whether the provider and facility are in network, whether the service remains eligible under the plan, and how your deductible, copay, or coinsurance applies.

In other words, authorized does not mean free, and it does not necessarily mean the final claim cannot have another issue.

Who is responsible for getting prior authorization?

In many situations, an in-network provider's office submits the prior authorization request. But relying on that assumption without checking can create an expensive surprise.

Before planned care, ask the provider's office whether authorization is required, whether it has been submitted, and whether approval has actually been received. Then confirm with the insurer when the cost or procedure is significant. Keep the authorization number or written confirmation if one is available.

A useful question is: "Does this service require prior authorization under my specific plan, and has it been approved for this provider and facility?"

What if prior authorization is denied?

A denial is not always the end of the process. Start by finding out why the request was denied. The reason matters.

The insurer may have needed additional documentation, required a different treatment first, determined that the request did not meet its medical-necessity criteria, or found another coverage issue. Your provider may be able to submit additional information, request reconsideration, or use the plan's appeal process when appropriate.

Do not treat every denial as the same problem. A missing record and a service excluded by the policy are very different situations and may require very different next steps.

Prior authorization rules are changing

Prior authorization has become a major focus of federal efforts to make health coverage easier to use. For certain health plans regulated by the Centers for Medicare & Medicaid Services, new requirements are being phased in around decision timeframes, denial explanations, reporting, and electronic prior authorization.

Those rules do not make every insurer or every health plan follow one identical process, and requirements can change. For current rules that apply to your coverage, check your plan documents and the insurer directly.

A five-minute check can prevent a much bigger problem

Before non-emergency care that could be expensive, confirm these five things:

1. Is the service covered?

2. Is prior authorization required?

3. Has the authorization actually been approved?

4. Are the provider and facility in network?

5. What deductible, copay, or coinsurance should apply?

That short checklist is more useful than simply asking, "Do you take my insurance?" A provider can accept your insurance and a service can still have separate authorization or benefit requirements.

Choosing a plan when you expect ongoing care

If you know you will need regular treatment, specialty medication, imaging, therapy, or a planned procedure, prior authorization rules are worth considering before enrollment. The cheapest premium does not tell you how easy the plan will be to use when care is actually needed.

A good comparison looks beyond the headline price and checks the network, prescription formulary, deductible, out-of-pocket maximum, copays, coinsurance, and authorization requirements that matter for your situation.

If you want help comparing those details, request a quote and you will work directly with Josef Doney from the first question through enrollment. ValleyView Health Co is licensed nationwide, and your information is never sold, rented, or traded. You can also call or text us at (406) 855-9636.

This article explains general insurance concepts and is not individualized financial, tax, or medical advice. Plan terms vary — always confirm details in the plan's Summary of Benefits and Coverage before enrolling.