Extreme immaturity of NB, gestatnl age 24 completed weeks

This code signifies a liveborn infant delivered at an extremely premature gestational age of 24 completed weeks. These newborns are at very high risk for significant morbidity and mortality due to underdeveloped organ systems.

Apply this code for newborns born at precisely 24 weeks gestation. Documentation must clearly state the gestational age at birth as 24 completed weeks, typically confirmed by obstetric ultrasound or early physical examination. This code is used as a secondary diagnosis following the Z38.- code for liveborn infant.

• Ensure the gestational age is documented as "24 completed weeks" and not "24 weeks and X days" unless it rounds down to 24 completed weeks.
• Do not confuse with codes for other gestational ages; specificity is crucial for this category.
• Always sequence this code after the appropriate Z38.- code indicating the liveborn infant's place of birth and type of delivery.