Prior Authorization Step-by-Step

You get the prescription. You’re ready to start. You drive to the pharmacy, hand over your insurance card, and then the pharmacist says something like: “This medication requires prior authorization. We can’t fill it until your insurance approves it.”

And just like that, the momentum stops. You’re not sure what just happened, what you’re supposed to do next, or how long this is going to take. It feels like a wall went up between you and the medication your doctor prescribed.

Here’s what I want you to know upfront: prior authorization is not a denial. It’s a speed bump — an annoying, bureaucratic, sometimes infuriating speed bump — but it’s a process with defined steps, clear timelines, and more leverage on your side than the insurance company wants you to realize. Most people who push through this process get their medication approved. The system is counting on you giving up. Don’t.

What Prior Authorization Actually Is

Prior authorization (you’ll also see it called “PA” or “pre-authorization”) is a requirement from your insurance company that your doctor get approval before you can fill a prescription. It means the insurer wants to review the medical justification for the medication before they agree to pay for it.

Think of it as a gatekeeper — not a judge. The insurance company isn’t saying “no.” They’re saying “convince us.” And your doctor’s office handles most of that convincing.

Here’s the part that frustrates doctors as much as it frustrates you: this process exists primarily to control costs, not to improve your care. The American Medical Association has been fighting prior authorization requirements for years, and 94% of physicians report that PA causes delays in care.[1] Your doctor already decided you need this medication. The insurance company is second-guessing that decision.

That said, the process is real, it’s not going away anytime soon, and knowing how it works gives you a real advantage.

The Process: What Actually Happens

Here’s the step-by-step of what happens from the moment you drop off your prescription to the moment you pick up your medication. Some of these steps happen behind the scenes — but understanding them helps you know when to follow up and who to call.

You get your prescription — your doctor writes or electronically sends it to the pharmacy.
The pharmacy discovers PA is required — the system flags it and the pharmacist lets you know. You leave without your medication, but the process is moving forward.
Your doctor's office submits the PA request — someone on the medical team submits documentation: your BMI, weight history, weight-related conditions, and why this specific GLP-1 is medically necessary. Many offices now use CoverMyMeds for faster electronic submission.[6]
The insurance company reviews — standard reviews take up to 7 business days; urgent reviews take 72 hours. In practice, many PAs are processed in 24-48 hours through electronic submission.[3]
You get a decision — approved (pharmacy can fill it), approved with modifications (different med or dose), or denied (not the end — keep reading).

What Insurance Companies Typically Require for GLP-1s

PA criteria vary by insurer, but for GLP-1 weight management medications, most plans look for some combination of:

BMI thresholds — Usually BMI of 30 or higher, or BMI of 27+ with a weight-related health condition. This mirrors the FDA indications.

Documentation of prior weight loss attempts — Many insurers want evidence that you've tried losing weight through other means first — sometimes a minimum of 3-6 months of documented efforts.

Step therapy ("fail-first") — The insurer requires you to try cheaper medications (phentermine, Contrave, orlistat) before approving the GLP-1 your doctor prescribed. This can add months to your timeline. If those alternatives are unsafe for you, your doctor can request a step therapy override — worth asking about.

Supervised weight management program — Some insurers require documentation that you participated in a structured weight management program, sometimes with a specific number of visits over a set period.

Continuation requirements — Even after approval, many insurers only approve GLP-1s for 6-12 months initially, then require documented progress (often at least 5% body weight loss) to continue coverage.

From Brandon's Experience:

The first time I dealt with prior authorization, I didn’t know any of this. I just waited — assuming the pharmacy or the doctor’s office would call me when it was ready. Nobody called. I finally followed up after a week and found out the paperwork hadn’t been submitted yet. That’s when I learned the most important lesson about PA: you have to be your own project manager. Ask your doctor’s office who handles PAs, get their direct number, and don’t be afraid to check in. The squeaky wheel doesn’t just get the grease — it gets the medication.

First-Submission Approval Rates

Here’s the good news: most prior authorizations for GLP-1 medications are approved on the first submission. Depending on the insurer and the quality of the documentation, first-submission approval rates range from roughly 40% to 70%.[3]

That’s a wide range, and the difference usually comes down to how thorough the submission is. Offices that submit detailed documentation with clear medical justification get approved more often than offices that submit the bare minimum.

From my experience, the single best thing you can do to improve your odds is help your doctor’s office help you. If they ask you to bring records of previous weight loss attempts, past lab work, or documentation from other providers — do it quickly. The more complete the submission, the faster and more likely the approval.

What to Do If You're Denied

A denial feels like a dead end. It isn’t. Here’s where most people make a critical mistake: they give up. And the insurance industry is banking on exactly that.

Did You Know?

According to research on insurance denials, 69% of patients whose claims are denied don’t even know they have the right to appeal. And 85% of patients who are denied never attempt an appeal — even though appeal success rates are remarkably high.[5]

Let that sink in. The majority of people who are told “no” accept it as final, even though it very often isn’t. Here’s what your options actually look like:

Level 1: Internal Appeal

Every insurer is required by law to offer this. Your doctor resubmits with stronger documentation and clinical justification. Deadline is typically 30-180 days from denial (check your denial letter). Many denials are overturned here simply because the first submission wasn't thorough enough.

Level 2: Peer-to-Peer Review

Your doctor speaks directly with the insurer's medical director by phone to make the case for your medication. This is a powerful tool — a physician-to-physician conversation is very different from a claims processor checking boxes. That said, only 16% of insurance reviewers have appropriate specialty qualifications to evaluate the request.[4]

Level 3: External (Independent) Review

The one most people don't know about. After exhausting internal appeals, you have the federal right (under the ACA) to an independent review by physicians who don't work for your insurer.[2] The key fact: an external review decision is legally binding on your insurance company. They can't appeal it or override it. Request through your state insurance department or plan documents.

Level 4: State Insurance Department Complaint

If your insurer isn't following their own policies or state regulations, file a complaint with your state's Department of Insurance. Not technically part of the appeal process, but it creates a formal regulatory record and sometimes prompts insurers to reconsider.

Appeal Success Rates: Better Than You Think

Here’s the part the insurance companies don’t advertise: people who appeal their denials win at surprisingly high rates — roughly 40% to 78%, depending on the study and the appeal level.[1][5]

Read that again. If you appeal, your odds of getting the decision reversed are significant. In some cases, they’re better than a coin flip. At the external review level, where an independent physician makes the call, success rates climb even higher.

The math is simple. If 85% of denied patients never appeal, and 40-78% of those who do appeal succeed, that means an enormous number of people are going without medications they could have gotten — simply because the process discouraged them.

Don’t be one of them.

Practical Tips for Getting Through the Process

Know who handles PA in your office — Get the name and direct number of the PA coordinator, nurse, or billing specialist who manages these requests. They're your point of contact, not the front desk.

Provide documentation quickly — If your doctor's office asks for records of past weight loss attempts, lab results, or other documentation, get it to them fast. Delays on your end create delays in the process.

Call the manufacturer support line — NovoCare (1-888-693-5676) for Ozempic/Wegovy and LillyDirect for Mounjaro/Zepbound have dedicated teams to help navigate PA, connect you with savings programs, and sometimes intervene directly with insurers.

Ask about electronic PA — Platforms like CoverMyMeds let providers submit and track PAs electronically, which is significantly faster than fax-based processes.[6]

Get the denial in writing — The denial letter should include the specific reason, the criteria you didn't meet, and instructions for how to appeal. This document is your roadmap.

Keep a timeline — Write down every date: when the PA was submitted, when you followed up, when the decision came back. A clear timeline strengthens your case if you need to appeal or file a complaint.

Pro Tip:

If your PA is denied and you decide to appeal, ask your doctor’s office whether they’ve done peer-to-peer reviews before. Some providers are very experienced at this and know exactly how to present your case. Others have never done one. If your provider hasn’t, you might gently suggest they request one — it’s one of the most effective tools in the appeal arsenal.

The Bottom Line

Prior authorization is one of the most frustrating parts of starting a GLP-1 medication. It’s a bureaucratic process that can feel designed to wear you down. And honestly? In some ways, it is. Insurance companies know that most people who hit resistance will simply stop pushing.

But now you know how the process works, what the timelines are, and what your options are when you hear “denied.” You know that approval rates on first submission range from 40-70%. You know that appeal success rates are 40-78%. And you know that external reviews are legally binding on the insurer.

This isn’t a system you’re powerless against. It’s a system with rules — and now you know them. Your doctor prescribed this medication because they believe it’s right for you. The prior authorization process doesn’t change that clinical judgment. It just makes you jump through hoops to get there.

Jump through the hoops. Follow up. Appeal if you need to. You have more power in this process than anyone on the insurance side wants you to realize.

Sources:

American Medical Association. “What Doctors Wish Patients Knew About Prior Authorization.” AMA, 2024.
HealthCare.gov. “External Review.” U.S. Centers for Medicare & Medicaid Services.
GoodRx. “Prior Authorizations: What You Need to Know.” GoodRx Health, 2024.
American Medical Association. “How to Make Peer-to-Peer Prior Authorization Talks More Effective.” AMA, 2024.
Counterforce Health. “Sample Appeal Letter for Ozempic, Wegovy & GLP-1 Denials.” Counterforce Health, 2025.
CoverMyMeds. “Simplify GLP-1 Prior Authorization.” CoverMyMeds, 2024.