Extreme immaturity of NB, gestatnl age 25 completed weeks

This code signifies a liveborn infant delivered at a gestational age of exactly 25 completed weeks, indicating extreme prematurity. These newborns are at high risk for significant morbidity and mortality due to underdeveloped organ systems.

Apply this code for newborns documented as being delivered at 25 weeks gestation. This diagnosis is typically established by obstetric ultrasound dating or early neonatal assessment. Documentation must clearly state "25 completed weeks" or "25 weeks gestation."

• Ensure the documentation specifies "completed weeks" to avoid ambiguity with "weeks and days."
• This code is for the newborn's condition, not the mother's.
• Always sequence this code as a principal diagnosis when it meets the definition of the principal diagnosis.