LOINC description : Use of alcohol by the patient as defined by the American College of Surgeon's National
Trauma Data Standard (NTDS). Blood alcohol concentration (BAC) may be documented at
any facility (or setting) treating the patient for a given trauma event. Trace levels
is defined as any alcohol level below the legal limit, but not zero. Beyond legal
limit is defined as a blood alcohol concentration above the legal limit for the state
in which the treating institution is located.;