This HCUP Statistical Brief examines inpatient hospital stays with MRSA in California in 2013. Inpatient stays are categorized by clinical condition associated with MRSA—pneumonia, septicemia, cellulitis or skin ulcers, complications following surgery or medical care, and other clinical conditions. Patients with a MRSA-associated hospital admission who acquired the infection during the course of the hospitalization are then compared with those who acquired the infection following receipt of treatment or care in a health care facility in the past 90 days or who acquired the infection in the community. Health care facilities include inpatient hospital settings, emergency departments, and ambulatory surgery facilities. Differences greater than 10 percent are noted in the text.