Other premature separation of placenta, third trimester

This code signifies the premature detachment of a normally implanted placenta from the uterine wall during the third trimester of pregnancy, excluding complete or partial abruption. This condition can compromise fetal oxygen and nutrient supply and lead to significant maternal hemorrhage. It encompasses various forms of placental separation not otherwise specified as total or partial abruption.

Use this code when documentation indicates any premature separation of the placenta occurring after 28 weeks gestation that does not meet the criteria for a complete or partial abruption. This includes scenarios where the extent of separation is not fully quantified or described as total/partial, but the clinical picture confirms premature detachment. Supporting documentation would include physician notes detailing signs and symptoms such as vaginal bleeding, abdominal pain, uterine tenderness, and fetal distress, with the timing specified as the third trimester.

• Ensure the documentation clearly specifies "third trimester" for accurate code assignment.
• Differentiate this code from O45.0- (premature separation of placenta with coagulation defect) and O45.1- (hemorrhage from premature separation of placenta) if those specific complications are documented.
• Always sequence this code as a principal diagnosis when it is the primary reason for the encounter, followed by codes for any associated complications.