Prior Authorisation for Mental Health — What It Is and How to Handle It

Prior authorization is a requirement from your insurance company that a treatment be approved in advance before they’ll pay for it. For mental health care, it most often shows up around higher levels of care — inpatient admission, intensive outpatient programs, or a specific medication — rather than routine weekly outpatient therapy. Here’s how it works and how to handle it if you hit it.

When prior authorization actually applies

Standard outpatient individual therapy with an in-network provider usually does not require prior authorization under most plans — you can typically start seeing a therapist without any advance approval process. Prior authorization more commonly kicks in for a step up in intensity: inpatient psychiatric admission, partial hospitalization programs (PHP), intensive outpatient programs (IOP), certain psychological testing, and some psychiatric medications, particularly newer or brand-name drugs when a generic alternative exists.

Why parity law still matters here

The Mental Health Parity and Addiction Equity Act requires that prior authorization requirements for mental health and substance use treatment not be applied more stringently than for comparable medical/surgical care. In practice this has been an area of real enforcement activity — several state attorneys general and the Department of Labor have pursued insurers over mental health prior authorization practices found to be non-compliant with parity rules, so if a prior authorization denial seems arbitrary or unusually aggressive, that’s worth knowing.

The process, step by step

Your provider (not you directly, in most cases) submits a prior authorization request to your insurer, including clinical documentation of medical necessity — diagnosis, symptoms, prior treatment attempts, and why the requested level of care is appropriate. The insurer reviews it, typically within a specific turnaround time set by state law or plan terms (often 72 hours for urgent requests, up to 15 days for standard ones), and either approves, denies, or requests additional information.

If it gets denied

A prior authorization denial is not final. You have the right to appeal, and mental health prior authorization denials are overturned on appeal more often than people expect, particularly when the treating provider submits a clear clinical justification. Your denial letter is required to explain the specific reason and the appeals process and deadline — read it carefully, since missing an appeal window can forfeit your right to challenge the decision. See our guide on appealing a therapy insurance denial for the full process and a sample letter.

What to do before treatment starts

If you or your provider know a higher level of care is likely needed, ask upfront whether prior authorization is required and, if so, get the request submitted as early as possible — waiting until the day treatment is needed can delay access to care during an already difficult time. For urgent or emergency situations, insurers are required to expedite review, and emergency care generally cannot be denied for lack of prior authorization at all.

Keeping your own records

Keep a log of every call — date, representative name, reference number, and what was said — for any prior authorization request or denial. If a dispute arises later, this record is often the single most useful thing you can hand to an appeals reviewer or a state insurance regulator.