Antepartum hemorrhage w coag defect, unsp, first trimester

This code signifies bleeding from the vagina during the first trimester of pregnancy, specifically when a maternal coagulation disorder is identified as the cause. The exact nature of the coagulation defect is not specified in this particular code.

Apply this code when a pregnant patient in her first trimester presents with vaginal bleeding, and medical documentation confirms a pre-existing or newly diagnosed coagulation defect (e.g., von Willebrand disease, hemophilia, or acquired coagulopathy) as the etiology. This code is appropriate when the specific type of coagulation defect is not documented or is unknown at the time of coding.

• Ensure documentation clearly links the antepartum hemorrhage to a coagulation defect.
• If the specific type of coagulation defect is known, a more specific code from the O46.0 category should be used.
• Always sequence this code after the primary obstetric complication (e.g., threatened abortion if applicable) and before the code for the specific coagulation disorder.