Prior authorization backlogs are often described as volume problems. They show up as growing queues on operational dashboards, rising turnaround times, and escalating pressure on clinical teams. The explanation, almost reflexively, is that demand arrived faster than expected - too many requests, too little time.
But for most health plans, that explanation doesn’t hold up under scrutiny. Prior authorization backlogs are rarely caused by volume alone. They are caused by friction inside the authorization process itself. Friction that is well known, consistently repeated, and largely predictable.1
The Question Leaders Should Be Asking
The real question isn’t why prior authorization volume increased. It’s why so many authorization requests cannot move cleanly from intake to decision. In theory, prior auth is straightforward: receive a request, assess medical necessity, render a decision, notify the provider. In practice, the work looks very different.
Requests arrive incomplete. Key fields are missing or entered incorrectly. Clinical documentation is attached as hundreds of unstructured pages. Nurses and physicians spend their time searching for the few sentences that actually matter. Decisions stall because they are clinically complex, but because the information required to make them is fragmented, inconsistent, or buried.
Backlogs form not at the moment of clinical judgment, but long before that judgment can even begin.
Where Prior Authorization Actually Breaks Down
Most prior authorization backlogs are built upstream, during intake. Provider offices submit requests with missing clinical details, outdated codes, or attachments that don’t align to policy requirements.2 Internal coordinators re-key information from faxes, portals, or PDFs, introducing small errors that force rework later. Many prior authorization delays stem from manual processes and technology gaps, leading to inefficiency and error-prone workflows.3 Each defect is minor on its own, but together they create a steady drag on throughput.
Downstream, clinical reviewers inherit this friction. Nurses sift through large medical records to reconstruct timelines.4 Physicians pause decisions while clarifications are requested. Requests bounce between teams. Appeals increase, not always because the decision was wrong, but because the rationale was delayed or unclear. The backlog grows quietly, one stalled case at a time.
Why This Feels Like “Unexpected Volume”
From a distance, all of this looks like a surge. Executives see more cases aging past SLA. Leaders see staff working harder without visible progress. The conclusion is that volume must be overwhelming capacity. In reality, capacity is being consumed by rework.
Every incomplete intake, every mis-keyed field, every unclear policy reference turns a single request into multiple touches. What should have been a linear process becomes a loop. The backlog isn’t driven by how many requests arrived, it’s driven by how many times each request must be handled before it can be resolved. That multiplier effect is predictable. And yet, it’s rarely modeled.
Why Automation Alone Doesn’t Fix Prior Auth Backlogs
Automation is often applied at the intake layer, with the promise of speed. And it does make submission faster. Providers submit more requests. Intake teams process them more quickly. But if the underlying issues remain - missing information, poor data normalization, unstructured records, automation simply accelerates the arrival of flawed work.
Clinical teams feel this immediately. More cases arrive faster, but with the same defects. Reviewers spend less time waiting and more time searching, clarifying, and escalating.5
This is why many health plans modernize prior auth technology and still experience worsening backlogs. Automation has increased flow, but not decision readiness.
What High-Performing Plans Do Differently
Plans that control prior authorization backlogs focus less on speed and more on decision quality at intake.
They invest in ensuring requests arrive complete, structured, and aligned to policy requirements. They reduce manual keying wherever possible. They use technology to surface the right clinical evidence, rather than flooding reviewers with entire charts. And they treat policy interpretation as something that must scale consistently across reviewers, not as tribal knowledge.
Most importantly, they measure where requests stall and why. Backlogs are treated as signals: indicators of where information breaks down, where policy is unclear, or where rework is being introduced.
As a result, their queues are smaller and not because demand disappeared, but because requests move through the system once, instead of three or four times.
The Preventable Nature of Prior Authorization Backlogs
When prior authorization backlogs are framed as staffing or volume problems, they persist. When they are understood as information and workflow problems, they become solvable.
Prior auth backlogs don’t originate in clinical decision-making. They originate in how information enters the system and how much effort it takes to make that information usable.
What executives experience as UM backlogs are almost always prior authorization system outcomes. They reflect whether a health plan has designed prior authorization to support clean, defensible decisions at scale.
At Mizzeto, we work with payer organizations to address this exact gap. Connecting intake, clinical review, and policy logic so prior authorization decisions can be made efficiently, consistently, and explainably. Through Smart Auth, we help plans ensure requests arrive decision-ready: structured intake, reduced manual rework, and clinical evidence surfaced in context rather than buried in charts. Because in modern utilization management, sustained performance isn’t about pushing teams harder. It’s about removing the friction that never needed to be there in the first place.
SOURCES
- https://www.ama-assn.org/practice-management/prior-authorization/prior-authorization-delays-care-and-increases-health-care
- https://www.aha.org/system/files/media/file/2023/10/aha-urges-cms-to-finalize-the-improving-prior-authorization-processes-proposed-rule-letter-10-27-2023.pdf
- https://www.atlantisrcm.com/knowledge/single/prior-authorization-delays-the-new-billing-bottleneck-in-the-u-s
- https://www.aha.org/system/files/media/file/2022/10/Addressing-Commercial-Health-Plan-Challenges-to-Ensure-Fair-Coverage-for-Patients-and-Providers.pdf
- https://blog.nalashaahealth.com/prior-authorization-automation-for-healthplans




















