O46: Antepartum haemorrhage, not elsewhere classified

O46.0: Antepartum haemorrhage with coagulation defect

When you bleed, after a while the blood usually clots by itself. Platelets and various clotting proteins in the blood are involved in blood clotting. The platelets can adhere to one another in such a way that they stop a bleed. The clotting proteins stabilize the platelets that have stuck together. This enables wounds to heal, for example. When you have a blood clotting disorder, you bleed more heavily or for longer than usual, for example.