99283 - Emergency Dept. visit for the evaluation and management of a patient with 3 key components.
Expanded problem focused history (yes, this visit meets these criteria)
Expanded problem focused examination (did they take b/p, pulse, temp, check eyes, glands, ears? then yes)
Medical decision making of moderate complexity (yes, the questions they asked would determine if there was a concussion and if further testing would be necessary)
Sorry, but even if this was a quick visit to the ER, the injury that the patient presented with, and the decision making involved (even if, Thank God, the child wasn't badly injured) meets this code's requirements.