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1. A CDI specialist is reviewing the dashboard metrics for
her hospital and notices that the case mix index (CMI) has
decreased from 1.8 to 1.6 in the last quarter. What is the
most likely reason for this change?
a) The hospital has admitted more patients with lower
severity levels.
b) The hospital has improved its documentation and coding
accuracy.
c) The hospital has increased its length of stay (LOS) for
most DRGs.
d) The hospital has reduced its readmission rates for most
DRGs.
*Answer: a) The hospital has admitted more patients with
lower severity levels.*
Rationale: CMI is a measure of the average severity and
resource consumption of a hospital's patients, calculated by
dividing the total DRG relative weights by the total number
of discharges. A lower CMI indicates that the hospital's
patients have lower severity levels and require less
resources, which could be due to changes in admission
patterns, payer mix, or clinical practice.
2. A CDI specialist is comparing the dashboard metrics for
her hospital with those of a peer hospital in the same
region. She notices that her hospital has a higher mortality
index (MI) than the peer hospital. What does this mean?
a) Her hospital has more deaths than expected based on its
case mix.
b) Her hospital has fewer deaths than expected based on its
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