We examined extra length of stay and associated per diem costs attributable to health care–associated infections.
Extra length of stay was estimated by multistate modeling.
Health care–associated infection increased hospital length of stay and cost of care.
Additional costs attributable to health care–associated infections were €5,823-€11,840 ($7,453-$15,155) per infected patient.
Potential cost savings of at least €2 million ($2.5 million) per year were estimated for a major tertiary care center.