Percentagea of emergency department (ED) visitsb for asthmac admitted to a critical care unit (CCU)—National Hospital Ambulatory Medical Care Survey, United States, 2010–2015.
aPercentage of emergency department (ED) visits with asthma as the primary diagnosis that were admitted to a critical care unit (CCU).
bBased on a sample of visits to EDs in noninstitutional general and short-stay hospitals, exclusive of federal, military, and Veterans administration hospitals, located in the 50 states and the District of Columbia.
cDefined as ED visits with a diagnosis of asthma (ICD-9-CM 493.0) as the primary diagnosis for the current visit.