Dehydration of newborn

This code represents a state of insufficient total body water in a neonate, resulting from inadequate fluid intake, excessive fluid loss, or a combination of both. It can range from mild to severe, impacting electrolyte balance and organ function.

Assign this code when documentation explicitly states "dehydration of newborn" or describes clinical signs consistent with dehydration in an infant within the neonatal period (birth to 28 days). This includes scenarios like poor feeding, decreased urine output, sunken fontanelles, or significant weight loss.

• Always confirm the patient's age falls within the neonatal period (0-28 days) for this code to be appropriate.
• Distinguish from other fluid and electrolyte imbalances; this code specifically targets dehydration.
• Code any underlying causes of the dehydration, such as feeding difficulties or gastroenteritis, as additional diagnoses.