Neonatal hypoglycemia

This code represents abnormally low blood glucose levels in a newborn infant, typically defined as plasma glucose less than 40 mg/dL in the first 24 hours of life or less than 45 mg/dL thereafter. It indicates a metabolic disturbance where the neonate's body cannot maintain adequate glucose homeostasis.

Use this code when documentation clearly states a diagnosis of neonatal hypoglycemia, often supported by blood glucose measurements below established thresholds for age. This diagnosis is common in infants of diabetic mothers, premature infants, or those experiencing birth stress.

• Always confirm the diagnosis is explicitly stated as "neonatal hypoglycemia" and not just a low blood sugar reading without a definitive diagnosis.
• Distinguish from hypoglycemia in older infants or adults, which would be coded differently.
• Consider sequencing with codes for underlying conditions contributing to the hypoglycemia, such as maternal diabetes (e.g., 775.0, 775.1).