The International Classification of Diseases (ICD) is used in over 160 countries by vital statistics departments for coding and tabulating cause of mortality data. The external cause of injury chapter is the basis for international statistical comparisons of injury mortality. This paper describes major changes in the transportation-related cause of injury codes proposed for the Tenth Revision of the ICD. The proposed codes identify the types of vehicles involved, the driver/passenger status of the victim, and whether the event was traffic/nontraffic. These changes should facilitate closer comparability between vital records (or occasionally morbidity data) and detailed traffic accident record systems.