Inpatient hospital stay denials
Hospital stays are denied as 'not medically necessary at the inpatient level', downgraded to observation, or cut off after a set number of days. The bill can be large and the patient often learns of the denial only after discharge.
What gets denied
- Admission through the emergency department for chest pain, sepsis, pneumonia, heart failure, or stroke
- Days beyond an authorized length of stay
- Inpatient status reclassified to observation after the fact
- Admission after a surgery the plan considers outpatient
- Psychiatric or detox admissions
Common denial reasons
- Plan says the patient could have been treated in observation or as an outpatient
- Plan's criteria for inpatient severity of illness were not met on the admission day
- Notification or prior authorization was late or missing
- Continued-stay review found 'no active treatment' on the disputed days
- The hospital's own documentation did not state the expected length of stay
How we approach the appeal
Obtain the admission order, the emergency department record, and the physician's admission note stating the expected length of stay and the reason inpatient care was needed. Request the plan's criteria and the reviewer's specialty. For Medicare Advantage, cite the Two-Midnight rule and 42 CFR 422.101(b)(2). Hospitals usually run their own appeal; a member appeal in parallel is allowed and adds the patient's rights under the plan's grievance rules. If the stay was reclassified to observation, ask for the date and authority for the reclassification.
Commercial and employer plans: at least 180 days to file an internal appeal; post-service decisions within 60 days (29 CFR 2560.503-1). Medicare Advantage: 65 days to request reconsideration (42 CFR 422.582). A patient still in the hospital who is told coverage ends can request immediate QIO review, generally by the day of discharge (42 CFR 405.1205; 42 CFR 422.622).
Inpatient stays are among the highest-value denials; the amount at stake is the plan's allowed amount for the denied days, which for multi-day stays is commonly tens of thousands of dollars.
- · The denial letter and any observation or status-change notice
- · Admission order and physician admission note
- · Emergency department record and triage notes
- · Daily progress notes for the disputed days
- · Discharge summary
Inpatient hospital stay denial? Let's appeal it.
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Start Your AppealThis page provides general information about appeal strategy. It is not legal advice. Outcomes depend on documentation, plan terms, and timing.