Prem separtn of placenta w afibrinogenemia, unsp trimester

This code signifies the premature detachment of the placenta from the uterine wall before the delivery of the fetus, specifically complicated by afibrinogenemia. Afibrinogenemia is a rare blood clotting disorder characterized by the absence of fibrinogen, a crucial protein for clot formation, which exacerbates the risk of hemorrhage during placental abruption. This diagnosis indicates a severe obstetric emergency with significant maternal and fetal risks.

Apply this code when documentation clearly states placental abruption (premature separation of the placenta) and explicitly mentions the presence of afibrinogenemia. This would typically be supported by laboratory findings confirming absent fibrinogen levels in a pregnant patient experiencing symptoms like vaginal bleeding, abdominal pain, uterine tenderness, or fetal distress. This code is used when the specific trimester of the pregnancy is not documented.

• Ensure documentation specifies both "placental abruption" and "afibrinogenemia" to accurately assign this code.
• If the trimester is known, a more specific code from the O45.01- subcategory should be used (e.g., O45.011 for first trimester).
• Always sequence this code as a principal diagnosis when it is the primary reason for the encounter, followed by codes for any associated complications or conditions.