How To Obtain Prior Authorization And Appeal Denials?

Getting a prior authorization approved comes down to documentation and persistence. You need to show the insurer that the service is medically necessary, that it is covered under the plan, and that you have met any step therapy or criteria they require. If a request is denied, you have the right to appeal, and appeals succeed more often than most people expect when they are filed correctly and on time.

Prior authorization is a cost-control process. It is not a judgment about whether you need care. Understanding how the process actually works, and where it commonly breaks down, helps you avoid delays and fix denials faster.

What Is Prior Authorization And Why Does It Exist?

Prior authorization is a requirement that your health plan approve certain services before you receive them. Without approval, the plan may refuse to pay, even if the service is covered in principle.

Insurers use prior authorization to check that a service meets their coverage rules. Those rules usually require evidence that the service is medically necessary, that you have tried lower-cost options first, or that you meet specific clinical criteria. The process applies to many non-emergency services: certain medications, imaging such as MRI or CT scans, surgeries, specialist referrals, and some procedures.

Not every service needs authorization. Many plans publish a list of services that require it, sometimes called a prior authorization list or code list. Checking that list before scheduling is one of the simplest ways to avoid a surprise bill.

One point that surprises many people: having a service covered by your plan is not the same as having it approved in advance. Coverage describes what the plan pays for. Prior authorization is a separate gate you pass through before the service happens.

How Do You Start The Prior Authorization Process?

In most cases your doctor’s office starts the request, not you. The clinician who orders the service usually submits the authorization to your insurer, often through a portal or a standard form.

Your job is to make that step easier and to track it. Here is what helps:

• Confirm with your doctor’s office that they are submitting the authorization and ask when.
• Give them your insurance card details and member ID so the request is filed against the right plan.
• Ask what clinical information they are sending, such as notes, test results, or a letter of medical necessity.
• Get a reference number for the request if one is issued.
• Ask the insurer’s expected turnaround time.

Timelines vary by plan and by whether the request is urgent. Urgent requests are generally handled faster than routine ones. Ask your insurer what applies to your case rather than assuming a fixed number of days.

A letter of medical necessity from your clinician is often the single most useful document. It explains in clinical terms why you need this specific service and why alternatives are not appropriate. A short note that says “patient needs MRI” is weaker than a note that describes your symptoms, what has already been tried, and what the results will change.

What Makes A Prior Authorization More Likely To Be Approved?

Approval usually depends on matching the request to the insurer’s written criteria. The strongest requests do that directly.

Insurers typically look for three things: that the service is covered, that you meet their clinical criteria, and that you have completed any required steps. Step therapy, for example, may require you to try a preferred medication before a more expensive one is approved. If you have already tried it, documenting that clearly matters.

Ask your doctor’s office to address the plan’s criteria point by point. If the insurer requires evidence of a prior treatment, a specific diagnosis, or a certain test result, those details should be in the submission. Missing documentation is a common reason requests get denied or delayed, and it is often fixable.

Keep your own record of everything: dates, who you spoke with, reference numbers, and what you were told. If a denial happens, that record becomes the backbone of your appeal.

Why Was My Prior Authorization Denied?

Denials usually fall into a few categories. Knowing which one applies tells you how to respond.

• Missing information. The request lacked clinical notes, test results, or proof that step therapy was completed. This is often resolved by resubmitting with the missing documents.
• Criteria not met. The insurer decided you did not meet its written clinical rules. An appeal can challenge this with additional clinical evidence.
• Not covered. The service may be excluded from your plan or require a different pathway. Check your plan documents.
• Coding or administrative errors. Wrong procedure code, wrong member ID, or a request sent to the wrong place. These are clerical and usually correctable.

Read the denial letter carefully. It should state the reason and tell you how to appeal, including the deadline. Do not discard it. The reason given shapes your entire appeal strategy.

How Do You Appeal A Prior Authorization Denial?

You appeal by filing a formal request to reconsider, within the deadline stated in your denial letter. Deadlines vary by plan, so check yours immediately. Missing the deadline can cost you the right to appeal internally.

The appeal should respond directly to the stated reason for denial. If the insurer said you did not meet criteria, your clinician should explain how you do, with evidence. If information was missing, supply it. A generic letter asking them to reconsider rarely works as well as a targeted response.

You can usually ask your doctor to write a supporting letter or to speak with the insurer’s reviewer. Some plans allow a peer-to-peer review, where your clinician speaks directly with the insurer’s medical reviewer. This is common practice, though whether it is offered and how it works varies by plan.

There are generally two levels of appeal:

• Internal appeal. The insurer reviews its own decision. You usually have a limited window to file.
• External review. If the internal appeal fails, an independent reviewer outside the insurer examines the case. This is generally available for certain denials, and the rules vary by plan and by state.

You can often file an appeal yourself, and you can authorize someone else, such as a family member or your doctor, to act on your behalf. Ask your insurer for the form that grants this permission if you want help.

Appeals are worth pursuing. Many denials are overturned on appeal, particularly when the original denial was based on missing or incomplete information. The exact rates vary widely by plan and service, so treat any single number with caution.

When Should You Contact Your State Or Regulator?

If your plan is through an employer or the individual market, your state insurance department may be able to help with certain disputes. Medicare and Medicaid have their own appeal processes and timelines that differ from private plans.

Before escalating, confirm what type of plan you have, because the rules and the regulator differ. Your plan documents or member services can tell you. If you believe the plan has not followed its own process, or has missed required timelines, a complaint to the appropriate regulator is a reasonable step.

Keep copies of every letter and note every phone call. A clear paper trail strengthens any complaint.

What Should You Do Before And After A Denial?

Preparation prevents most problems, and organization fixes most denials.

Before the service, confirm the authorization is approved in writing, not just verbally. Ask for the approval reference number. Confirm how long the approval lasts, since authorizations can expire.

After a denial, act quickly. Read the letter, note the deadline, and contact your doctor’s office the same week to plan the appeal. Ask what clinical evidence they can add. File before the deadline even if you are still gathering documents, if the plan allows amendments.

You do not have to navigate this alone. Your clinician’s office, your plan’s member services, and in some cases a patient advocate or your state’s insurance consumer assistance program can help. The process is bureaucratic, but it is designed to be used, and using it correctly is often what decides the outcome.