Other placental disorders, second trimester

This code identifies various unspecified abnormalities or complications of the placenta that manifest during the second trimester of pregnancy. These are conditions that do not fit into more specific placental disorder categories, such as placenta previa or abruption. It indicates a placental issue requiring clinical attention during this gestational period.

Use this code when documentation clearly indicates a placental disorder in the second trimester that is not otherwise specified or classifiable to a more precise ICD-10-CM code. Examples include documented placental cysts, placental infarcts, or other structural anomalies identified via ultrasound or other diagnostic means, without further specification of the type or severity.

• Ensure the documentation explicitly states "second trimester" for the placental disorder.
• Always review for more specific placental disorder codes (e.g., O43.1- for placenta previa, O45.- for placental abruption) before defaulting to this code.
• If the placental disorder is specified but no specific code exists, or if it's described as "other specified," consider using a more specific "other specified" code within the O43 category if available for the specific condition.