Cerebral anoxia due to anesth during preg, unsp trimester

This code signifies brain damage resulting from a lack of oxygen (anoxia) that occurred as a direct complication of anesthesia administered during pregnancy. It specifically indicates that the trimester of pregnancy during which this event occurred is not documented or specified.

Use this code when documentation clearly links cerebral anoxia in a pregnant patient to anesthetic complications, and the specific trimester is not recorded. This would typically be supported by anesthesiology notes, obstetric records, and neurological evaluations detailing the anoxic event and its sequelae.

• Ensure documentation explicitly states "anoxia" and not just "hypoxia" if anoxia is intended.
• Always look for more specific codes if the trimester is known (e.g., O29.211-O29.213).
• Sequence this code after the primary obstetric code indicating the reason for the encounter, if applicable.