Table 1.

Severity ratings for traumatic brain injury (TBI) from the DSM-5

Injury characteristic	Mild TBI	Moderate TBI	Severe TBI
Loss of consciousness	< 30 minutes	30 minutes – 24 hours	> 24 hours
Posttraumatic amnesia	< 24 hours	24 hours – 7 days	> 7 days
Disorientation and confusion at initial assessment (Glasgow Coma Scale Score)	13 – 15 (not below 13 at 30 minutes)	9 – 12	3 – 8