A standard prior authorization request typically takes between three days and two weeks, depending on your insurance type, the service being requested, and whether the request is classified as urgent. Urgent or expedited requests are generally resolved within 24 to 72 hours. But these are maximums set by regulations, not guarantees of quick answers. About 31% of patients in one large survey reported waiting more than a week.
Standard vs. Urgent Request Timelines
The single biggest factor in how long you’ll wait is whether your request qualifies as urgent. An urgent or expedited request applies when a delay could seriously harm your health, such as when you need a procedure soon after an emergency room visit or when waiting for a medication could cause your condition to worsen significantly. Your doctor typically needs to indicate that the request is time-sensitive for it to be processed on the faster track.
For standard (non-urgent) requests, the timelines vary by insurance type:
- Medicaid managed care plans: Current federal regulations allow up to 14 calendar days for a standard decision and 72 hours for an expedited one. Starting January 2026, new federal rules will shorten the standard window to seven calendar days.
- Medicare Advantage plans: The same 2026 rule applies: seven calendar days for standard requests, 72 hours for expedited ones.
- Commercial/employer plans: Timelines depend on your state’s laws. Many states cap urgent decisions at 24 to 72 hours, but standard requests may have looser or no specific deadlines at the state level.
- Prescription drugs under Medicaid: Federal law requires a response within 24 hours for covered outpatient drugs, and pharmacies must dispense a 72-hour emergency supply if the decision hasn’t come through.
In practice, the average wait across all types is about three days. That number masks a wide range, though. Simple prescription authorizations sometimes come back the same day, while complex procedures like surgery or specialty imaging can stretch well beyond a week.
Why Your Request Might Take Longer Than Expected
The clock on a prior authorization often resets or stalls when the insurer decides the submission is incomplete. If your doctor’s office didn’t include the right clinical notes, lab results, or a specific diagnosis code, the insurer will “pend” the request, meaning it sits in limbo until the missing information arrives. Every back-and-forth exchange between your doctor’s office and the insurer can add days.
Another common delay happens when insurers deny a request without providing a clear reason. Patients and doctors are sometimes told only that authorization wasn’t granted, with no explanation of what additional documentation would change the outcome. This forces your doctor’s office to guess what’s needed, resubmit, and wait again. The AMA has pushed insurers to include detailed denial reasons, links to the specific coverage policy used in the decision, and guidance on what documentation would support approval, but not all plans do this consistently.
Electronic submissions through insurer web portals are almost always faster than fax-based requests. Washington state, for example, gives insurers one calendar day to respond to electronic expedited requests but two calendar days for the same request sent by fax. If your provider’s office is still faxing authorizations, that alone can add a day or more.
What Your State Requires
More than two dozen states have passed laws capping how long insurers can take to respond, particularly for urgent requests. The specifics vary considerably. Virginia and Kentucky require insurers to respond to urgent requests within 24 hours. Illinois, Indiana, Minnesota, Ohio, and Vermont set the urgent cap at 48 hours. A larger group of states, including California, Colorado, Georgia, Maine, Michigan, New Jersey, New York, Pennsylvania, Rhode Island, and Tennessee, use a 72-hour window for urgent decisions.
Some states get even more granular. Alaska requires a 24-hour turnaround for care following emergency services but allows 72 hours for other non-emergency requests. New Jersey mandates 24-hour responses for urgent electronic prescriptions and 72 hours for non-urgent ones. These laws apply to commercial insurance plans regulated by the state. If you have a self-funded employer plan (common at large companies), state mandates may not apply because those plans fall under federal oversight instead.
The 2026 Federal Rule Change
Starting January 1, 2026, a CMS final rule will impose uniform federal timelines on Medicare Advantage plans, Medicaid managed care organizations, and plans sold through the Affordable Care Act marketplace. The rule requires decisions within 72 hours for expedited requests and seven calendar days for standard requests. For Medicaid managed care, this cuts the current 14-day standard window in half.
The rule also requires insurers to build electronic systems that let providers submit and track prior authorization requests digitally, which should reduce the fax-and-phone delays that slow many requests today. It won’t eliminate prior authorization, but it should make the worst-case waiting periods shorter and more predictable for millions of people.
If Your Request Is Denied
A denial isn’t the end of the process. You have the right to appeal, and appeals have their own timeline. For employer-sponsored plans governed by federal law, the insurer must respond to an internal appeal within 60 days. Urgent appeals are faster, typically requiring a decision within 72 hours. Many denials are overturned on appeal, especially when your doctor provides additional clinical documentation explaining why the treatment is medically necessary.
If the internal appeal fails, you can request an external review by an independent third party. External reviews are usually decided within 45 days for standard cases or 72 hours for urgent ones, though this varies by state. The entire process, from initial denial through external review, can stretch to several months in a worst-case scenario, so acting quickly at each step matters.
How to Speed Things Up
Ask your doctor’s office to submit the request electronically and to include all supporting documentation upfront: recent lab work, imaging results, notes explaining why alternative treatments won’t work, and the specific diagnosis codes the insurer needs. Incomplete submissions are the most common reason for delays, and a thorough initial package can prevent days of back-and-forth.
Call your insurance company 48 to 72 hours after submission to confirm they received the request and that it’s being processed, not sitting in a pending queue waiting for information nobody told you was missing. If you’re waiting longer than your state’s mandated timeline or the federal maximum for your plan type, say so explicitly when you call. Insurers are more responsive when you can cite the specific rule they’re required to follow.