Objectives: Asthma is considered "ambulatory care-sensitive," yet emergency department (ED) visits remain common. Few studies have examined how ED asthma patients choose their sites of urgent care. The authors explored reasons for asthma-related ED use among adults.Methods: From May to September 2012, semistructured qualitative interviews were conducted with a convenience sample of patients visiting a high-volume urban ED for asthma. A piloted interview guide was used; it had open-ended questions derived from clinical experience and a focus group of asthmatic adults who frequently use the ED for care. Interviews were conducted until theme saturation was reached. Interview transcripts and field notes were entered into NVivo 10 and double-coded, using an iterative process to identify patterns of responses, ensure reliability, examine discrepancies, and achieve consensus through content analysis.