What Prior Authorization Actually Means
Prior authorization — sometimes called pre-authorization, pre-approval, or pre-certification — is a requirement that your health insurer approve certain medical services, prescription drugs, or procedures before they are performed or filled. Without that approval, the insurer may refuse to pay, even if the service would otherwise be covered under your plan.
Insurers use prior authorization to confirm that a service meets their clinical criteria for medical necessity. That doesn't mean the service isn't needed — it means the plan has a defined set of standards it applies before agreeing to pay. Common triggers include brand-name or specialty drugs, non-emergency surgeries, advanced imaging (MRI, CT), durable medical equipment, and certain mental health services.
If you manage a chronic condition, prior authorization is likely a recurring part of your care. Understanding how the process intersects with your coverage is especially important — see our guide to picking a plan when you have a chronic condition for factors that affect ongoing authorization requirements.
What you will need
Tools You'll Need
Insurer's Member Portal or App
Check the status of a pending prior authorization request in real time without waiting on hold.
Summary of Benefits and Coverage (SBC)
Identify which services and drugs require prior authorization under your specific plan.
State Insurance Commissioner's Website
File an external complaint or request an independent review if internal appeals are exhausted.
Having the right materials at hand before you start saves time at every stage, from confirming a requirement to filing an appeal.
Step-by-Step: Navigating Prior Authorization
Confirm Whether Prior Authorization Is Required
Not every service needs pre-approval. Review your plan's Summary of Benefits and Coverage (SBC) or call member services to ask specifically whether the procedure, drug, or referral your doctor is recommending requires prior authorization. Get the answer in writing — via the member portal or a follow-up email — so you have documentation if a dispute arises later.
Have Your Provider Submit the Request
Prior authorization is almost always initiated by your healthcare provider, not you. Contact your doctor's office to confirm they have submitted the request and ask for the reference or tracking number the insurer assigns. This number lets you monitor the request's progress without relying on your provider for updates.
Track the Request and Know the Response Timelines
Federal rules under the Affordable Care Act and ERISA require insurers to respond within defined windows. Standard (non-urgent) requests must receive a decision within 15 calendar days. Urgent or expedited requests — where waiting could seriously jeopardize your health — must be decided within 72 hours. Contact your insurer if a deadline passes without a decision.
Read the Denial Letter Carefully
If the request is denied, your insurer must send a written notice explaining the specific reason — typically citing a clinical coverage guideline or a finding that the service is not medically necessary under the plan's criteria. Read this explanation closely; it tells you exactly what gap you need to address in an appeal. Note the denial code and the name of the clinical guideline cited.
File an Internal Appeal with Supporting Documentation
You have the right to appeal a denial to your insurer. Ask your provider to supply a letter of medical necessity, relevant clinical records, peer-reviewed literature supporting the treatment, and any prior treatment attempts that failed. Submit everything together and request a written confirmation of receipt. Organized, complete submissions move faster and fare better than piecemeal ones. See also: how the appeals process works for a broader view of claim denials.
Request an External Independent Review If the Appeal Fails
If your internal appeal is denied, you can typically request an external review by an independent organization that is not affiliated with your insurer. Under the ACA, most plans are required to comply with the external reviewer's decision. Contact your state insurance commissioner's office or the federal Health Insurance Marketplace if your plan is subject to federal oversight. This step is free and does not require an attorney.
Ask Your Doctor to Flag Medical Necessity
When your provider submits a prior authorization request, ask them to include detailed clinical notes, relevant test results, and a letter explicitly explaining medical necessity. Requests with thorough documentation are approved at higher rates than bare-minimum submissions.
Never Skip Prior Auth for Non-Emergency Care
If your plan requires prior authorization and you receive care without it, the insurer can deny the entire claim — leaving you responsible for the full cost. Always confirm authorization requirements with your insurer before a scheduled procedure. The only exception is a genuine medical emergency, which federal law treats differently.
When a Denial Catches You Off Guard
Prior authorization denials are among the most common surprises policyholders encounter during the claims process. The denial is not a final verdict — it is the start of a formal process. The appeal system exists precisely because denials are sometimes issued on incomplete information or without full clinical context.
Keep a dedicated log of every call: date, time, representative name, and what was said. This record becomes valuable if you escalate to external review or file a complaint with your state insurance commissioner. For a broader look at how unexpected claim situations unfold, our article on surprises that catch people off guard during a health insurance claim covers scenarios beyond prior authorization.
Deadlines for Appeals Are Strict
Most health plans set firm deadlines for filing an internal appeal — often 180 days from the denial notice, but sometimes shorter. Missing this window can forfeit your right to appeal entirely. Check your denial letter for the exact deadline and mark it immediately.
This article provides general information about health insurance processes and is not personalized legal, medical, or financial advice. Coverage rules, timelines, and appeal rights vary by plan type and state. Always review your actual policy documents and consult a licensed insurance professional or qualified healthcare provider for guidance specific to your situation.
