-- O88.01 Obstetric air embolism in pregnancy

--- O88.011 Air embolism in pregnancy, first trimester

--- O88.012 Air embolism in pregnancy, second trimester

--- O88.013 Air embolism in pregnancy, third trimester

--- O88.019 Air embolism in pregnancy, unspecified trimester

-- O88.02 Air embolism in childbirth

-- O88.03 Air embolism in the puerperium