Rationale for Development of a Traumatic Brain Injury Case Definition for the National Concussion Surveillance System
The CDC developed a tiered case definition for self-reported traumatic brain injury (TBI) to improve national surveillance, addressing limitations of hospital-based data that undercount TBIs occurring in outpatient and untreated settings. This surveillance system aims to better estimate the public health burden of concussion and TBI across all causes of brain injury in the United States.