Neonatal hypomagnesemia

This code signifies abnormally low levels of magnesium in a newborn's blood. Hypomagnesemia in neonates can manifest with symptoms such as tremors, seizures, irritability, and muscle weakness, and may be associated with other electrolyte imbalances.

Assign this code when documentation explicitly states neonatal hypomagnesemia, often identified through laboratory testing showing serum magnesium levels below the normal range for a newborn. This diagnosis is typically made in the immediate postnatal period or early infancy.

• Ensure documentation specifies "neonatal" to differentiate from hypomagnesemia in older patients.
• Look for associated conditions like maternal diabetes, prematurity, or malabsorption that may contribute to neonatal hypomagnesemia.
• Do not confuse with transient hypocalcemia of the newborn, although these conditions can co-occur.