O10.912 - Unspecified pre-existing hypertension complicating pregnancy, second trimester
O10.9 - Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium O10.91 - Unspecified pre-existing hypertension complicating pregnancy O10.912 - Unspecified pre-existing hypertension complicating pregnancy, second trimester