Cardiac arrest due to anesth during preg, first trimester

This code signifies a sudden cessation of cardiac activity in a pregnant patient during her first trimester, directly attributed to the administration of anesthesia. This is a severe and life-threatening adverse event occurring as a complication of anesthetic agents or techniques.

Apply this code when documentation clearly links a cardiac arrest event to anesthesia administration in a pregnant patient within the first trimester (weeks 0-13). This would typically be supported by anesthesiology notes, operative reports, or critical care documentation detailing the anesthetic agents used and the subsequent cardiac arrest.

• Ensure the documentation explicitly states the cardiac arrest was "due to anesthesia" and not merely "during anesthesia."
• Verify the pregnancy trimester is clearly documented as the first trimester.
• Always sequence this code as a principal diagnosis if it is the reason for the encounter, or as a secondary diagnosis if it is a complication of a primary procedure.