Other premature separation of placenta, second trimester

This code signifies the premature detachment of the placenta from the uterine wall before the third trimester of pregnancy, specifically occurring between the 14th and 27th completed weeks of gestation. This condition can lead to maternal hemorrhage, fetal distress, and preterm birth.

Assign this code when documentation clearly indicates a placental abruption occurring in the second trimester, and the specific type of abruption is not further specified as partial or complete, or is described as "other." Supporting documentation would include physician notes detailing the timing of the abruption, clinical signs such as vaginal bleeding, abdominal pain, uterine tenderness, and fetal heart rate abnormalities, along with ultrasound findings confirming placental separation.

• Ensure the documentation explicitly states "second trimester" for accurate code assignment.
• Distinguish from O45.8X1 (first trimester) and O45.8X3 (third trimester) based on gestational age.
• Always code any associated complications, such as hemorrhage (O46.-) or fetal distress (O43.81-), in addition to this code.