Across the country, lawmakers are increasingly scrutinizing a health insurance practice that frustrates patients and doctors alike: prior authorization. A recent report by NPR highlights how states are stepping in with new laws designed to curb delays, reduce denials, and hold insurers accountable. For patients, this shift could be the difference between getting timely care and facing dangerous delays. But even with these reforms, wrongful denials still happen—especially as insurers increasingly rely on automated systems and artificial intelligence.
This post explains what’s changing, what it means for you in Wisconsin, and what to do if your care has been denied.
What Is Prior Authorization?
Prior authorization (sometimes called pre-authorization or prior approval) is a process where your insurance company must approve a medication, test, or medical procedure before you can receive it.
Insurers typically say this step is meant to ensure the treatment is medically necessary—which in turn, at least theoretically, prevents unnecessary treatment and helps control health care costs. Practically speaking, however, this process often creates delays and administrative barriers to care.
In fact, physicians report that prior authorization frequently delays treatment, and sometimes leads patients to abandon care entirely. And for patients with serious or time-sensitive conditions, these delays can have real consequences.
The Growing Role of AI in Denials One of the most controversial developments when it comes to prior authorization determinations is the insurers’ increasing use of artificial intelligence and automated systems to make medical decisions. While this practice improves insurers’ efficiency, it also raises serious risks including:
- Lack of individualized review: AI systems may not fully account for a patient’s unique medical condition
- Rubber-stamp denials: Some systems may default to denial based on rigid rules
- Transparency: Patients and doctors often don’t know how decisions are made
- Potential legal violations: In some cases, automated denials may conflict with requirements that decisions be made by qualified medical professionals
What to Do If Your Prior Authorization Is Denied
If your prior authorization request is denied, do not assume the insurer’s decision is final. Many denials are later overturned on appeal.
1. Carefully review the denial letter
Your insurer must explain:
- Why the request was denied
- The specific policy or guideline used
- How to appeal the decision
Common denial reasons include: · The treatment is considered not medically necessary
- The insurer claims there is a cheaper alternative
- Documentation from your doctor was incomplete
2. File an internal appeal
In preparing your appeal, you should ask your doctor for supporting documentation. Appeals are much stronger when the physician includes:
- Medical records
- Peer-reviewed research supporting the treatment
- A letter of medical necessity
Most health plans allow at least one internal appeal where the insurer re-reviews the claim. Federal and state laws often require insurers to decide appeals within specific timeframes depending on urgency (in most cases, urgent care appeals will be deciding with 72 hours, pre-service claims will be decided within 30 days, and post-service claims will be decided within 60 days).
4. Request an external review If the internal appeal fails, patients usually have the right to an independent external review by a third party. You must file a request for an external review within 4 months of the date you receive the final internal appeal denial. (You can learn more about Wisconsin’s independent external review process here.)
If the reviewer finds the treatment medically necessary, the insurer must cover the treatment.
When “Pre-Approved” Care Is Still Denied
Prior authorization is often treated as a guarantee of coverage, but in reality, it can be little more than a preliminary checkpoint. It is all too common that after taking the responsible step of
securing prior authorization, a patient moves forward with a recommended procedure, trusting that the insurer’s approval means the treatment is covered. Then, weeks or months later, the claim is denied anyway—leaving the patient caught off guard and facing unexpected costs despite having done everything right.
Several common mechanisms drive these post-authorization denials. One is retrospective medical necessity review, where the insurer re-evaluates the claim using additional records that were not part of the original authorization request. Another is coding discrepancies: if the procedure performed or billed does not exactly match the authorized service code, the insurer may deny the claim even when the underlying treatment is the same. Coverage limitations embedded deep within plan documents—such as exclusions, frequency limits, or network restrictions—can also surface only after the fact, effectively overriding the earlier authorization.
There is also a structural issue at play. Prior authorization decisions are often made quickly, sometimes by third-party vendors, based on standardized criteria and minimal clinical context. The claims adjudication process, by contrast, is more granular and documentation-heavy. These two systems don’t always align, and the gap between them is where patients fall through. What feels like a single, continuous approval process to the patient is, in reality, a series of checkpoints—any one of which can result in denial.
This growing pattern highlights a critical takeaway: prior authorization should not be treated as the final word on coverage. Patients and providers increasingly need to view it as one step in a larger, more uncertain process—and take additional precautions accordingly, such as confirming benefit details in writing, ensuring precise coding alignment, and keeping thorough documentation in case an appeal becomes necessary.
Prior Authorization Reform in Wisconsin and Beyond
Against this backdrop, policymakers are beginning to respond to growing concerns about prior authorization abuse—though reforms remain uneven and incomplete. In Wisconsin, recent legislative proposals have focused on increasing transparency and oversight of prior authorization requirements, as well as limiting certain practices, such as the use of artificial intelligence to deny care and expanding protections around utilization management. These efforts reflect broader pressure from providers and patient advocates to make the process more predictable and accountable. Beyond Wisconsin, a national wave of reform is taking shape: some states now prohibit retroactive denials after prior authorization (absent fraud), require faster decision timelines, or mandate that approvals remain valid for set periods.
The Bottom Line
Prior authorization denials are frustrating—but they are not the end of the road.
Many patients successfully overturn insurance denials through appeals, especially when they have strong medical documentation and understand the legal process.
However, when the stakes are high—serious illness, costly treatment, or repeated denials—consulting an attorney who focuses on health insurance appeals can be a critical step toward getting the care you need.