Final answer:
A newborn with scalp molding from childbirth likely has a condition referred to as 'Unspecified birth injury to head', which is temporary and resolves without treatment, corresponding to ICD-10 code P10.9.
Step-by-step explanation:
A newborn that exhibits molding of the baby's scalp due to a vaginal delivery is likely experiencing a common and typically harmless condition that is the result of the birthing process. Molding refers to the overlapping or shaping of the skull bones during childbirth to help the newborn pass through the birth canal. This condition is temporary and resolves on its own, as seen in the case described where it resolved prior to discharge without treatment. Given this context, the most appropriate ICD-10 diagnosis code from the provided options would likely be P10.9, which stands for 'Unspecified birth injury to head'. None of the other options specifically relate to the scenario described; P00.0 refers to newborns affected by maternal hypertensive disorders, P04.1 represents newborns affected by other maternal medication, and P02.0 indicates a newborn affected by placental transfusion syndromes.