What Is a Prior Authorization?

Prior authorization is a review process that health insurance companies use to determine whether a specific treatment, medication, or procedure is medically necessary and covered under a patient’s plan.

This review takes place before the service is provided and often serves as a checkpoint to help ensure patients receive appropriate care. Without prior authorization, a patient may be responsible for the full cost of care, even if it would otherwise be covered by insurance.

While designed to control costs and promote appropriate care, prior authorization often introduces administrative complexity for providers and uncertainty for patients. A clear understanding of how the process works, what approval does and does not mean, and how to manage requirements efficiently is essential for modern healthcare organizations.

What Are Prior Authorizations in Healthcare?

Prior authorization—also known as preauthorization, precertification, or preapproval—is a process in which a healthcare provider must obtain approval from a patient’s insurance company before delivering certain services. Health plans use this requirement to confirm that a proposed treatment aligns with clinical guidelines and is considered medically necessary under the patient’s specific benefit plan.

Prior authorization is not a guarantee of payment. An approval simply confirms that the service meets the payer’s medical policy criteria at the time of review. Final reimbursement still depends on the patient’s eligibility, plan benefits, deductible status, and accurate claim submission. Providers that proactively communicate this distinction to patients will help set realistic financial expectations and reduce downstream billing disputes.

Why Do Insurers Require Prior Authorization?

Health insurers implement prior authorization programs to manage utilization and ensure appropriate care. Payers evaluate whether a service is evidence-based and aligned with established treatment pathways. Prior authorization is required in order to:

• Ensure Medical Necessity: Prior authorization helps insurance providers confirm that a recommended service is consistent with clinical guidelines and supported by medical evidence. This helps reduce the risk of unnecessary or ineffective treatment and encourages providers to pursue care that is proven to be beneficial for the patient’s specific condition.
• Manage Rising Costs: Prior authorization also plays a role in cost containment. By reviewing high-cost treatments in advance, insurers can recommend equally effective but lower-cost alternatives, such as a generic drug in place of a brand-name option. This helps reduce unnecessary spending across the healthcare system while still allowing patients to receive the care they need.
• Promote Patient Safety: The prior authorization process provides an added layer of clinical review that can help identify potential safety concerns, such as duplicate therapies, drug interactions, or redundant testing. For patients, this can mean fewer adverse effects and a greater focus on care that delivers the most benefit with the least risk.

Services that commonly require prior authorization include advanced imaging, high-cost specialty medications, elective procedures, and certain durable medical equipment. Requirements vary by payer and plan type, which increases the administrative burden on provider organizations that contract with multiple health plans.

READ MORE: Prior Authorizations vs. Benefits Investigation

Who Is Responsible for Obtaining Prior Authorization?

In most cases, the responsibility for obtaining prior authorization falls on the ordering provider or rendering facility, not the patient. Administrative staff must verify benefits, determine whether authorization is required, and submit the necessary clinical documentation to the payer.

A complete submission typically includes:

• CPT or HCPCS procedure codes
• ICD-10 diagnosis codes
• Relevant clinical notes and test results
• Supporting documentation that demonstrates medical necessity

Incomplete or inaccurate submissions are a common cause of delays and denials. Establishing standardized workflows and clear payer-specific checklists improves approval rates and reduces rework.

How to Get a Prior Authorization

1. Provider Submits a Request

The process begins when a healthcare provider submits a prior authorization request to the patient’s insurance company. Prior authorization processing typically includes medical records, clinical notes, and a formal explanation of why the service is necessary.

2. Insurer Reviews the Submission

A clinical team at the insurance company—often made up of nurses, pharmacists, or physicians—reviews the request. They assess the treatment against the patient’s health plan and established medical guidelines to determine whether it qualifies for approval.

3. Additional Information May Be Requested

If the initial submission is missing key documentation or raises clinical questions, the insurer may reach out to the provider for more information. This can delay the decision process by several days or longer, depending on how quickly the requested information is returned.

4. Decision Is Issued

Once the review is complete, the insurance company issues a decision. For routine, non-urgent requests, a determination is typically made within one to three business days. For urgent requests, insurers are expected to respond more quickly—often within 24 to 72 hours.

5. Appeal If Denied

If a request is denied, patients and providers have the right to appeal. Appeals may involve submitting additional clinical documentation or requesting a peer-to-peer review.

How Long Does Prior Authorization Take?

Turnaround times vary depending on the payer, the type of service, and whether the request is standard or expedited. Some electronic requests may receive real-time or near-real-time responses. More complex cases can take several business days, and in certain situations up to two weeks.

For urgent or emergent services, health plans are required to follow accelerated review timelines. However, providers should always confirm payer-specific rules to avoid unintended delays in patient care.

READ MORE: How Long Does Prior Authorization Take?

What Happens If a Prior Authorization Is Denied?

A denial does not necessarily end the process. Common reasons for denial include insufficient documentation, failure to meet step therapy requirements, or administrative errors.

Providers generally have access to multiple levels of review:

• A peer-to-peer discussion between the treating physician and the payer’s medical reviewer
• A formal internal appeal with additional clinical evidence
• An external review conducted by an independent third party, when applicable

A structured denial management strategy, supported by accurate documentation and timely follow-up, can significantly improve overturn rates and protect revenue integrity.

Prior Authorization and Medicare

Prior authorization requirements differ across Medicare programs. Traditional Medicare limits prior authorization to specific services and demonstration programs. Medicare Advantage plans, administered by private insurers, often apply broader prior authorization requirements. Medicare Part D plans may require prior authorization for certain prescription drugs.

Because rules vary by program and contract, providers must confirm requirements at the plan level rather than relying on general assumptions about Medicare coverage.

How careviso Helps

careviso’s innovative prior authorization software, seeQer, is designed to streamline complex administrative requirements while advancing healthcare transparency. By delivering real-time verification of authorization requirements and structured submission workflows, seeQer helps organizations reduce avoidable denials and accelerate time to treatment.

With integrated eligibility insights and actionable data, providers can identify authorization needs earlier in the patient journey. This proactive approach minimizes last-minute cancellations, improves schedule integrity, and strengthens patient financial communication. The result is a more predictable revenue cycle and a more supportive patient experience.