Prem separtn of placenta w oth coag defect, first trimester

This code signifies the premature detachment of the placenta from the uterine wall during the first trimester of pregnancy, specifically when an underlying coagulation defect is identified as a contributing factor. 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 before 14 weeks of gestation, alongside a diagnosed maternal coagulation disorder (e.g., von Willebrand disease, thrombophilia). The medical record should specify both the timing of the abruption and the presence of the coagulation defect.

• Ensure the documentation explicitly states "first trimester" or a gestational age less than 14 weeks.
• A separate code for the specific coagulation defect should also be reported.
• Do not use this code if the abruption occurs in the second or third trimester; refer to other O45 subcategories.