Other persistent fetal circulation

This code describes a condition in a newborn where the fetal circulatory pathways, specifically the ductus arteriosus and/or foramen ovale, fail to close or regress normally after birth, leading to persistent right-to-left or bidirectional shunting. This results in pulmonary hypertension and inadequate oxygenation of systemic blood, despite the absence of a primary structural heart defect.

Assign this code when documentation indicates persistent pulmonary hypertension of the newborn (PPHN) or persistent fetal circulation (PFC) that is not due to a congenital heart anomaly. This typically applies to newborns presenting with cyanosis, tachypnea, and hypoxemia, where echocardiography confirms shunting through fetal pathways without a primary cardiac malformation.

• Differentiate from congenital heart defects causing shunting; this code implies functionally persistent fetal circulation.
• Ensure documentation explicitly states "persistent fetal circulation" or "persistent pulmonary hypertension of the newborn" and rules out structural heart disease.
• Sequence this code as a principal diagnosis when it is the primary reason for admission or as a secondary diagnosis when it complicates another condition.