ICD-10-CM > O00-O9A > O85-O92 > O88 > O88.0 O88.0 Obstetric air embolism Non-Billable/Non-Specific Codes O88.01Obstetric air embolism in pregnancyO88.011Air embolism in pregnancy, first trimesterO88.012Air embolism in pregnancy, second trimesterO88.013Air embolism in pregnancy, third trimesterO88.019Air embolism in pregnancy, unspecified trimesterO88.02Air embolism in childbirthO88.03Air embolism in the puerperium