Oth comp of anesthesia during pregnancy, first trimester

This code signifies any adverse event or complication arising from the administration of anesthesia during the first trimester of pregnancy, not otherwise specified by more specific O29 codes. This includes systemic effects, local reactions, or other untoward outcomes directly attributable to anesthetic agents or techniques.

Apply this code when documentation clearly indicates a complication related to anesthesia during the first trimester of pregnancy, and the specific type of complication is not detailed enough to assign a more precise O29 subcategory. Supporting documentation should include physician notes describing the anesthetic complication and its occurrence within the first trimester.

• Always strive for a more specific O29 code if the documentation allows (e.g., O29.0- for aspiration pneumonitis, O29.1- for pulmonary complications).
• Ensure the trimester is explicitly documented as "first trimester" to support the "1" in the 7th character.
• This code is typically a secondary diagnosis, following the code for the primary reason for the anesthetic procedure or the primary obstetric condition.