Yes, ideally every newborn should have his / her hearing tested.

Although estimates vary slightly, prevalence figures for hearing loss in children (from the Centers for Disease Control and Prevention-CDC and National Institute on Deafness and Other Communication Disorders – NIDCD) indicate that 1 to 3 infants out of every 1000 will have some degree of permanent hearing loss. It is expected that 10/1000 infants from the NICU will be identified with hearing loss, whereas 1/1000 are expected from the well baby nursery.