Head Injury Criteria

AIS Code

Level Of Brain Concussion And Head Injury

135 – 519

1

Headache or dizziness

520 – 899

2

Unconscious less than 1 hour – linear fracture

900 – 1254

3

Unconscious 1 – 6 hours – depressed fracture

1255 – 1574

4

Unconscious 6 – 24 hours – open fracture

1575 – 1859

5

Unconscious greater than 25 hours – large haematoma

> 1860

6

Non survivable