Injury surveillance, the ongoing, systematic collection, analysis, interpretation and dissemination of injury data, provides critical information to support public health efforts to reduce injury-related morbidity, mortality and disability.1 2 For the past several decades, state and local health departments and national agencies in the USA have relied on the use of hospital discharge and emergency department (ED) data coded using the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) to conduct injury surveillance.3 Surveillance case definitions and analyses have been based on ICD-9-CM codes. However, a US mandate to code using the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)4 5 has resulted in a need to update injury surveillance case definitions and analysis guidance based on ICD-10-CM.6–9