How-to

How to get a medication pre-authorization approved

March 21, 2026 8 min read

You leave your psychiatrist's appointment with a new prescription. Two days later you go to the pharmacy and the pharmacist says, "Your insurance needs prior authorization for this." A few more days pass, then a denial letter arrives in the portal. Now you have a medication you can't fill, an appointment that won't happen for another month, and rising worry. This is one of the most common pain points in modern psychiatric care — and it can be navigated.

In one sentence

Prior authorization is a process where your insurer wants the prescriber to justify why a particular medication is necessary — and it can almost always be approved with the right documentation, especially for antipsychotics, which are a protected drug class under Medicare.

Why prior authorization exists

Insurers use PA to manage cost. They want documentation that the requested medication is medically necessary, that cheaper alternatives have been considered, and that any required steps have been tried. PA is most common for:

Step 1: Confirm what is being asked

Call the insurer (or check the portal) and find out:

Step 2: Get the prescriber to submit

Prior authorizations are submitted by the prescriber, not the patient. Make sure your prescriber's office knows it is needed. A few helpful things you can do:

Step 3: Make the clinical case strong

A successful PA request usually contains:

For example: "Patient has schizophrenia (F20.9) with three documented hospitalisations and failed trials of risperidone (intolerable EPS), olanzapine (15 kg weight gain), and aripiprazole (severe akathisia). Patient is now stable on Vraylar with no side effects after 6 weeks. Discontinuation would risk relapse and rehospitalisation."

Step 4: Use step therapy override if needed

"Step therapy" requires you to try cheaper drugs first before approving the requested one. You can request an override if:

Many states have step therapy override laws specifically for mental health. Cite them in the appeal.

Step 5: Push for expedited review

For psychiatric medications, especially when stopping or switching could destabilise the patient, you can request an expedited (urgent) review. Insurers must decide expedited PAs within 72 hours under federal rules. Use this when:

Step 6: If denied, appeal

Most denials can be successfully appealed. The path:

  1. First-level internal appeal — often just resubmitting with stronger documentation
  2. Second-level internal appeal — often involves a peer-to-peer call between your prescriber and the insurer's medical director (highly effective when scheduled)
  3. External review by an Independent Review Organisation

See our guide to appealing insurance denials for the detailed appeal process.

The peer-to-peer call

This is often the most effective single step. Your prescriber requests a call with the insurer's medical reviewer (often a psychiatrist) to discuss the case directly. Approval rates after peer-to-peer calls are typically 60-80% in published surveys. If your prescriber's office doesn't routinely do them, ask if they will.

Bridge supplies and samples

While the PA is being processed, ask for:

Use copay cards and assistance

Even after PA approval, copays can still be high. See our patient assistance programs guide to lower out-of-pocket cost.

If you're on Medicare or Medicaid

Practical things you can do

When the system fails — escalate


This article is for educational purposes only and is not medical advice, legal advice, or financial advice. Rules and benefit amounts change; verify current details with the relevant agency or a qualified professional. If you or someone you know is in crisis, call or text 988 in the US, or your local emergency number.

Frequently asked questions

How long does prior authorization take?
Standard PA decisions are required within 72 hours for urgent requests and 14 days for non-urgent ones under most plans. Expedited review for psychiatric meds is usually granted when requested.
Can I get my medication while waiting?
Yes, often. Ask your prescriber for a sample, a bridge prescription of an alternative, or a manufacturer starter program. Many newer antipsychotics have a free 30-day starter program for exactly this scenario.
What's a peer-to-peer call?
A direct conversation between your prescriber and the insurer's medical reviewer (often a psychiatrist) to discuss the case. It is one of the most effective ways to get a PA approved — approval rates are typically 60-80% after a peer-to-peer.
Are antipsychotics protected from PA denials on Medicare?
Antipsychotics are a 'protected class' under Medicare Part D, meaning plans must cover essentially all of them. PA can still apply, but blanket denials of antipsychotic coverage can usually be appealed successfully.

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