Premature separation of placenta, unsp, third trimester

This code signifies the premature detachment of the placenta from the uterine wall during the third trimester of pregnancy, where the specific type or cause of the abruption is not documented. This condition can lead to significant maternal and fetal complications, including hemorrhage and fetal distress.

Apply this code when documentation clearly indicates a placental abruption occurring in the third trimester, but the provider does not specify the type (e.g., partial, complete, concealed, revealed) or the underlying cause. This code is appropriate when the clinical picture points to abruption, but further detail is lacking.

• Do not use this code if the type of placental abruption is specified; instead, use a more specific O45.xx code.
• Ensure the documentation explicitly states "third trimester" or provides gestational age indicating the third trimester.
• Always sequence this code as a principal diagnosis when it is the primary reason for the encounter, followed by codes for any associated complications.