Antepartum hemorrhage, unspecified, third trimester

This code signifies bleeding from the vagina occurring during the third trimester of pregnancy (after 28 weeks gestation) when the specific cause of the hemorrhage has not been identified or documented. It indicates an acute bleeding episode that requires further investigation or management.

Use this code when a pregnant patient in her third trimester presents with vaginal bleeding, and the physician's documentation does not specify the underlying etiology (e.g., placenta previa, placental abruption, vasa previa). This code is appropriate when the diagnosis is simply "antepartum hemorrhage, unspecified" or "vaginal bleeding in third trimester, cause unknown."

• Only use this code when the cause of the antepartum hemorrhage is truly unspecified; avoid using it if a more specific diagnosis is documented.
• Always sequence this code as the principal diagnosis when it is the reason for the encounter.
• Ensure documentation clearly states "third trimester" or provides gestational age indicating the third trimester.