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We’re spending billions trying to reduce length of stay.
So why isn’t it improving?
A small fraction of patients—just 2% of admissions—account for 15% of prolonged hospital days, costing more than $2 billion annually, or $2,093 per excess day, according to the Vizient Clinical Data Base. At the same time, hospital occupancy is projected to exceed the 85% safety threshold by 2032, putting timely access to care at risk.
The conventional explanation is familiar: length of stay (LOS) is a throughput problem driven by bed availability, staffing constraints, and discharge efficiency. But new data suggests a different root cause. LOS is not primarily a capacity issue. It is a coordination problem.
From assumption to evidence
To better understand what actually drives LOS performance, Vizient analyzed responses from 168 hospitals across 39 states through the Member Networks Performance Improvement Programs’ Length of Stay Breakthrough Survey.
The goal was to move beyond anecdote to determine which strategies are not only widely used but meaningfully associated with better outcomes.
When survey responses were paired with LOS index data from the Vizient Clinical Data Base, a clear pattern emerged. The strategies most strongly associated with lower LOS were non-clinical coordination capabilities, not traditional throughput tactics.
Specifically, high-performing organizations are more likely to:
- standardize escalations for discharge barriers
- identify and intervene early for vulnerable high-risk patients
- integrate social needs as part of care delivery rather than referring them out
- empower case managers to lead interdisciplinary coordination
Together, these findings point to a fundamental gap: hospitals don’t lack effort—they lack aligned execution. Here are four strategies.