When Olivia enters Bruno's apartment, the number on the door is 9D, but when they find his sister inside, Carisi calls for an ambulance for apartment 9J.
When Benson finds Keisha in the cage, she immediately opens it and pulls the little girl out. She should not have moved the child until medics showed up to confirm that there were no internal trauma that could have been made worse by moving in such a haphazard way.