Premature separation of placenta, unsp, unsp trimester

This code signifies the premature detachment of the placenta from the uterine wall before the delivery of the fetus, when the specific trimester of occurrence is not documented. This condition, also known as abruptio placentae, can lead to significant maternal and fetal complications due to hemorrhage and impaired oxygen/nutrient exchange.

Use this code when the medical record clearly indicates a diagnosis of placental abruption, but the documentation lacks specificity regarding the trimester in which it occurred. This code is appropriate when the physician's notes or discharge summary state "abruptio placentae, unspecified trimester" or similar.

• Avoid using this code if the trimester is documented; instead, select a more specific code from the O45.0-O45.8 range.
• Ensure documentation supports the "unspecified" nature of the trimester; if the trimester can be inferred, query the provider for clarification.
• Always code any associated complications, such as hemorrhage (O46.90) or fetal distress (O42.0-O42.9), in addition to the placental abruption.