The Boston Public Health Commission (BPHC) syndromic surveillance system receives information from ED visits from all 10 acute care hospitals in Boston every 24 hours. Data received include visit date, demographics, ZIP code of residence, chief complaints and ICD-9 CM-coded final diagnosis. Disposition information was reported from 9 of these hospitals in 2010. BPHC collaborated with CDC's BioSense Program to specify a BRI syndromic case definition that combined chief complaint and ICD-9 CM-coded information and excluded motor cycle only related events. Subsyndromes were used to assess the type of injury and severity based upon 47 standard BioSense subsyndromes and 21 subsyndromes developed for this study. The data sample used for this study included over 2 million visits between 2007 and 2010. Injury visits were categorized at the neighborhood level using a standard ZIP code of residenceto-neighborhood mapping. Results were stratified by age, patient neighborhood of residence, race/ethnicity, gender and disposition (2010 data only).