Answer: D
A33 is the correct code because the newborn baby is diagnosed with a tetanus bacilli infection known as tetanus neonatorum. A33 codes for tetanus neonatorum, which is seen in the newborn baby in the given case.
Option A is not correct because A39.0 specifies meningococcal meningitis, which is not the diagnosis here.
Option B is not correct because A34 specifies obstetrical tetanus, which is not the diagnosis here.
Option C is not correct because A46 specifies Erysipelas which is not the diagnosis here.