Insurance Denied Inpatient Stay: What To Do

Inpatient stay denials usually come from a utilization review process. Before or after you are admitted, the insurer reviews whether the admission meets its coverage criteria. If the reviewer decides the patient did not need inpatient-level care, or that the stay should have been shorter, the insurer can deny all or part of the claim.

The denial can arrive as a single letter covering the full stay, or as multiple denials covering different days. Read each one carefully because the reason for days 1 through 3 may be different from the reason for days 4 through 6. Each part of the denial may need a different argument in your appeal.

Insurers measure inpatient necessity against clinical criteria, often from national guidelines like InterQual or Milliman. These criteria look at things like vital signs outside normal range, a diagnosis requiring monitoring that cannot happen at home, active treatment that requires nursing or physician oversight around the clock, or a risk of rapid deterioration if the patient were discharged.

Your appeal should explain the clinical picture in those terms. What were the patient's vitals and labs on admission? What active treatment was being given? What would have happened if the patient had been discharged that day? A physician letter that explains the medical decision to admit and the risks of earlier discharge is one of the strongest documents you can include.

Gather the following before writing the appeal: the admission history and physical, the attending physician's daily notes, nursing notes from each day of the stay, medication records, lab and imaging results, specialist consult notes, and the discharge summary. If the insurer says certain records were missing, obtain them from the hospital and submit them with the appeal.

Also check whether the denial references a specific set of clinical criteria such as InterQual or Milliman. If it does, read those criteria and explain in your appeal how the records satisfy them.

Start with the identifying information: patient name, member ID, admission and discharge dates, hospital name, claim number, and denial reference. State you are appealing and which days of the stay are being disputed.

Then walk through the medical story. What brought the patient to the hospital? What was happening clinically on each denied day? Why could the patient not have been safely treated at a lower level of care? End with a clear request for reconsideration and list every document you are attaching. ClaimFighter can help organize these details into a draft that follows this structure and is ready for review before submission.