Table 2

Typical injury severity score (ISS) calculation in a 20 kg child with injuries sustained in fall from tree

ISS body region (column 1)Injury (column 2)AIS code + score (column 3)Highest AIS in body region (column 4)AIS 2 (column 5)
* In column 3 the bold numbers are the highest abbreviated injury score (AIS) coded in each region. The three body regions with the highest scores are chosen (column 4); these AIS code values are then squared (column 5) and then summed to give the ISS. Note: it would be acceptable to use values for “abdomen” or “face” in place of “external”.
Head/neckFracture vault of skull150400–2
Loss of consciousness for 3 min160202–2
Cerebral contusion140602–3*39 (32)
FaceBruised cheek210402–1*1
ChestNo injury
AbdomenBruised abdominal wall510402–1*1
ExtremitiesFracture ulna closed753202–2*
Fracture radius closed752802–2*24 (22)
Knee sprain750826–2*
ExternalAbrasions910200–1*11 (11)
ISS=14 (1+4+9)