Cardiac arrest due to anesth during preg, unsp trimester

This code signifies a sudden cessation of cardiac activity in a pregnant patient, directly attributable to the administration of anesthesia. It indicates a life-threatening anesthetic complication during pregnancy, where the specific trimester is not documented.

Apply this code when documentation clearly links a cardiac arrest event in a pregnant patient to an anesthetic agent, and the medical record does not specify the trimester of pregnancy. This typically occurs in emergency situations where detailed trimester information may be unavailable at the time of initial coding.

• Always seek documentation clarifying the specific trimester if available, as more specific codes exist (O29.111-O29.113).
• Code first the underlying cause of the cardiac arrest if known and not solely due to anesthesia.
• Ensure the documentation explicitly states "due to anesthesia" to support the causal link.