California’s overall 30-day readmission rate has declined from 14% in 2011 to 13.5% in 2015.1
The rate of unplanned hospital readmissions is an important measure of clinical quality. High rates may indicate concerns with low quality and are associated with high costs.2 Fortunately, there is evidence that hospital readmission rates can be reduced using tested quality improvement methods.3 Typically, these interventions involve system transformation. Coordinating care between in-patient, outpatient, home, and community settings is a key component of high quality health systems.3
Patients’ demographic and economic status, social support structure, and multiple health conditions can increase or decrease the likelihood of being readmitted; though these impacts are not fully understood.
Note that this indicator is not risk-adjusted and differs in some ways from the Centers for Medicaid and Medicare Services (CMS) measure. Data are categorized by age, sex, race/ethnicity, expected payer source, and county of residence. (See metadata below for further details.)