Low lying placenta with hemorrhage, third trimester

This code signifies a condition where the placenta is implanted in the lower uterine segment, close to or covering the internal cervical os, and is accompanied by bleeding during the third trimester of pregnancy. This placental position carries a risk of complications, including antepartum hemorrhage.

Apply this code when documentation clearly indicates a low-lying placenta (not specifically identified as placenta previa) with active bleeding occurring after 28 weeks of gestation. This diagnosis is typically made via ultrasound and confirmed by clinical signs of hemorrhage.

• Distinguish from placenta previa (O44.0-O44.2), where the placenta completely or partially covers the internal os.
• Ensure documentation specifies "low-lying" and not just "placenta previa" if the os is not covered.
• Always sequence this code as a principal diagnosis when it is the reason for the encounter, or as a secondary diagnosis if another condition is the primary reason for hospitalization.