Prem separtn of placenta w coag defect, unsp, first tri

This code signifies a premature detachment of the placenta from the uterine wall during the first trimester of pregnancy, specifically when a coagulation defect is also present. The "unspecified" nature indicates that the specific type of coagulation defect is not documented. This condition can lead to significant maternal and fetal complications due to hemorrhage.

Use this code when documentation clearly states a diagnosis of placental abruption occurring in the first trimester, alongside an identified but unspecified coagulation defect. Supporting documentation would include physician notes detailing the abruption, the trimester, and the presence of a coagulation disorder without further specificity.

• Ensure the documentation explicitly states "first trimester" for accurate trimester assignment.
• Do not use this code if the specific type of coagulation defect (e.g., disseminated intravascular coagulation) is known; instead, use a more specific code from the O45.0 subcategory.
• Always sequence this code as the principal diagnosis if it is the primary reason for the encounter, followed by codes for any associated complications or the specific coagulation defect if identified.