What Is a Concurrent Review Denial in Insurance?

Most patients assume that once insurance approves a hospital admission, the coverage is secure for the duration of the stay. That assumption is wrong. Insurers conduct a process called concurrent review throughout your hospitalization, and they can terminate authorization at any point—effectively telling the hospital, mid-stay, that they will no longer pay for your care.

Understanding concurrent review before it becomes a crisis can make the difference between a successful appeal and a bill for tens of thousands of dollars.

What Is Concurrent Review?

Concurrent review (sometimes called continued stay review) is the insurer's ongoing evaluation of whether your continued hospitalization meets their criteria for medical necessity. Unlike Prior Authorization Denied: How to Appeal" class="auto-link">prior authorization—which happens before you are admitted—concurrent review happens in real time while you are still in the hospital.

Typically, the insurer grants authorization for a set number of days. As that window approaches, the hospital's utilization review team must submit updated clinical information to justify continued inpatient care. The insurer's medical reviewer evaluates that information against clinical criteria (often InterQual or Milliman Care Guidelines) and decides whether to extend authorization.

If they decide your condition no longer meets inpatient criteria—or that you could be safely treated in a lower level of care, like a skilled nursing facility or outpatient setting—they issue a concurrent review denial.

Why Insurers Use Concurrent Review

From the insurer's perspective, concurrent review controls costs by preventing unnecessary inpatient days. Hospitals are expensive; if a patient is clinically stable and could recover at a lower level of care, the insurer has a financial incentive to push discharge.

The problem is that "clinically stable" and "ready for discharge" are not the same thing. A patient may have stable vital signs but still require monitoring, IV medication, or wound care that cannot safely be managed at home. Insurers applying rigid criteria can miss these nuances, resulting in premature discharge pressure.

Real-World Scenario

A 68-year-old patient is admitted after a heart failure exacerbation. The insurer approves three days. On day three, updated clinical notes show the patient is off oxygen and eating normally. The insurer's reviewer decides the patient meets criteria for discharge to home with outpatient follow-up. The attending cardiologist disagrees—the patient's kidney function is declining, likely from the diuresis, and needs monitoring. The insurer issues a concurrent review denial for day four onward.

This is the moment when a fast appeal is critical.

Your Rights During a Concurrent Review Denial

Federal law and most state laws require that you receive adequate notice before your inpatient coverage is terminated. Under Medicare rules, hospitals must give patients a written notice called the "Important Message from Medicare" (IM) at least two days before discharge, with information about appeal rights. For commercial plans, similar requirements exist under state law and ACA regulations.

Expedited internal appeal. When a concurrent review denial involves an inpatient stay, you have the right to an expedited internal appeal—not the standard 30- or 60-day process. Federal rules require the insurer to make a decision within 72 hours. If the situation is urgent and life-threatening, that timeframe may compress to hours.

Expedited External Independent Review: Complete Guide" class="auto-link">external review. If the internal appeal is denied, you can immediately request an expedited independent external review. Under ACA rules, the external reviewer must issue a decision within 72 hours.

Peer-to-peer review. Before formally appealing, your treating physician can request a peer-to-peer conversation with the insurer's medical reviewer. This call—typically requested the same day—allows the treating doctor to present clinical details that may not have been captured in the chart notes. Many concurrent review denials are reversed at this stage.

What the Hospital Owes You

If you receive a concurrent review denial while inpatient, the hospital should notify you immediately and explain your options. Ask the discharge planner or case manager:

• Has the attending physician requested a peer-to-peer review with the insurer?
• Has the hospital filed an expedited appeal on my behalf?
• What is the plan if the appeal is denied?

You also have the right to stay in the hospital while the appeal is pending, though the insurer may make you financially responsible for those days if the appeal fails. Get clarity on this in writing before you make any decisions about discharge.

If You Are Discharged Against Medical Advice

If you are pressured to leave before you feel it is safe and you comply, document everything. A note in your discharge records showing the physician recommended continued inpatient care—and discharge occurred due to insurance denial rather than clinical readiness—is valuable evidence for a post-discharge appeal.

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Related Reading:

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal