Insurance Denied Prior Authorization: What To Do

Prior authorization is a process where the insurer reviews a proposed service or medication before it is provided and decides whether it will be covered. When a prior authorization is denied, it means the insurer has reviewed the request and concluded that it does not meet the plan's coverage criteria. This is different from a claim denial, which happens after care is provided.

Prior authorization denials can affect procedures, surgeries, imaging studies, medications, medical equipment, inpatient admissions, and specialty care. The denial will include the reason the authorization was not approved and usually the specific clinical criteria the request did not satisfy.

The most frequent reason is a medical necessity dispute -- the insurer's clinical reviewer concludes that the documentation submitted does not support the need for the requested service. This often happens when the authorization request includes minimal clinical detail or when the provider's notes do not clearly connect the diagnosis to the proposed service.

Other common reasons include a requirement to try a less-intensive alternative first, such as conservative care before surgery or a first-line medication before a specialty drug. Missing records, an incomplete submission, or an authorization request for a service the plan categorizes as experimental or investigational can also trigger a denial. In some cases the submission was simply processed under the wrong code.

The first step is to get the full denial letter and read the specific criteria the insurer says were not met. Many denial letters reference a specific clinical policy or guideline. If yours does, look that document up. It will tell you exactly what evidence you need to submit to satisfy the criteria.

Your appeal should then provide that evidence. If the denial says medical necessity was not established, the provider needs to submit detailed clinical notes that connect the diagnosis to the requested service, document the symptoms and functional impact, and explain why the proposed service is the appropriate next step. If the denial says alternatives should be tried first, submit records showing they were tried and why they failed or are not appropriate.

If the denied prior authorization is for urgent care that cannot wait for a standard 30-day review, most insurers have an expedited appeal process. Standard internal appeal timelines are often 30 days, but expedited reviews must be decided within 72 hours under federal law for group health plans. Ask the insurer for expedited review in writing and explain why the delay would seriously jeopardize the patient's health.

Gather the clinical documentation quickly: the provider's notes, the proposed treatment plan, any imaging or lab results that support the request, and a physician letter explaining the urgency. ClaimFighter can help convert the denial into an organized appeal draft so you can focus on providing the clinical details that matter most.