Aspirat pneumonitis due to anesth during preg, unsp tri

This code describes inflammation of the lungs resulting from the inhalation of gastric contents or other foreign material during the administration of anesthesia to a pregnant patient. This aspiration event leads to chemical pneumonitis, a non-infectious inflammatory response in the lung tissue. The specific trimester of pregnancy is not documented or is unknown.

Apply this code when documentation clearly indicates aspiration pneumonitis occurred in a pregnant patient as a direct complication of anesthesia. This diagnosis is typically supported by imaging findings (e.g., chest X-ray showing infiltrates), clinical signs of respiratory distress, and a documented aspiration event during an anesthetic procedure.

• Always sequence this code after the obstetric code (e.g., O99.81x for other specified diseases complicating pregnancy).
• Do not use this code if the aspiration pneumonitis is due to causes other than anesthesia during pregnancy.
• Ensure documentation specifies "anesthesia" as the cause of aspiration; otherwise, consider codes for aspiration pneumonitis from other causes.