Transient neonatal thrombocytopenia

This code signifies a temporary reduction in platelet count in a newborn, typically resolving spontaneously within days or weeks after birth. It reflects a condition where the neonate's blood has an insufficient number of platelets, which are crucial for blood clotting.

Apply this code when documentation indicates a newborn has a low platelet count that is not chronic or due to a persistent underlying condition, and is expected to resolve without long-term sequelae. Supporting documentation would include laboratory results showing thrombocytopenia and physician notes confirming its transient nature.

• Ensure the documentation explicitly states the thrombocytopenia is "transient" or "neonatal" and not indicative of a chronic or inherited disorder.
• Do not use this code for thrombocytopenia in older infants or children; specific codes exist for those age groups.
• Consider sequencing this code as a secondary diagnosis if the primary reason for admission or encounter is related to a complication of the thrombocytopenia, such as bleeding.