Quality Improvement-Driven Reduction in Countywide Medicaid Acute Asthma Health Care Utilization

Abstract

Objective: This study evaluates the impact of a coordinated effort by an urban pediatric hospital and its associated accountable care organization to reduce asthma-related emergency department (ED) and inpatient utilization by a large, countywide Medicaid patient population.

Methods: Multiple evidence-based interventions targeting general pediatric asthma care and high health care utilizers were implemented using standardized quality improvement methodologies. Annual asthma ED and inpatient utilization rates by 2- to 18-year-old members of an accountable care organization living in the surrounding county (>140,000 eligible members in 2016), adjusted per 1000 children from 2008 through 2016, were analyzed using Poisson regression. We compared these ED utilization rates to national rates from 2006 to 2014.

Results: Asthma ED utilization fell from 18.1 to 12.9 visits/1000 children from 2008 to 2016, representing a 28.7% reduction, with an average annual decrease of 3.9% (P < .001), during a time when national utilization was increasing. Asthma inpatient utilization did not change significantly during the study period.

Conclusions: Asthma-related ED utilization was significantly reduced in a large population of primarily urban, minority, Medicaid-insured children by implementing a multimodal asthma quality improvement program. With adequate support, a similar approach could be successful in other communities.

Keywords: accountable care organization; inpatient asthma; outpatient asthma; pediatric asthma; population health.