Other antepartum hemorrhage, first trimester

This code signifies any bleeding from the genital tract occurring during the first trimester of pregnancy that is not specifically identified as a threatened abortion, early hemorrhage due to placenta previa, or premature separation of placenta. It encompasses various causes of antepartum hemorrhage not otherwise classified, such as cervical polyps, vaginitis, or trauma, when they result in bleeding during the initial 12 weeks of gestation.

Use this code when the medical record clearly documents antepartum hemorrhage occurring in the first trimester, and a more specific diagnosis for the bleeding (e.g., threatened abortion, placenta previa) has been ruled out or is not yet determined. This code is appropriate for cases where the bleeding source is identified but falls outside the scope of more specific O46 codes, or when the exact cause remains unknown after initial evaluation.

• Always confirm the trimester of pregnancy from the documentation; this code is strictly for the first trimester.
• Ensure that more specific codes for antepartum hemorrhage (e.g., O46.0- for placenta previa, O46.9- for unspecified antepartum hemorrhage) are not more appropriate.
• If the cause of the hemorrhage is identified (e.g., cervical polyp), code the underlying condition first, followed by this code as a secondary diagnosis, if applicable and supported by documentation.