Cardiac arrest following incomplete spontaneous abortion

This code signifies the occurrence of cardiac arrest as a direct complication following an incomplete spontaneous abortion. It indicates a severe, life-threatening cardiovascular event that arose in the context of a miscarriage where not all products of conception were expelled from the uterus.

Use this code when documentation clearly states that a patient experienced cardiac arrest subsequent to an incomplete spontaneous abortion. This typically applies in emergency or critical care settings where the patient's cardiovascular system failed after an incomplete miscarriage. Supporting documentation would include physician notes detailing both the incomplete abortion and the subsequent cardiac arrest.

• Always sequence the code for the incomplete spontaneous abortion (O03.4) first, followed by this code.
• Ensure documentation specifies "incomplete" abortion; do not use for complete or unspecified spontaneous abortions.
• Verify that the cardiac arrest is explicitly linked as a complication of the abortion, not an unrelated event.