O10.91

Unspecified pre-existing hypertension complicating pregnancy, first trimester

Unspecified pre-existing hypertension complicating pregnancy, second trimester

Unspecified pre-existing hypertension complicating pregnancy, third trimester

Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester

Unspecified pre-existing hypertension complicating childbirth

Unspecified pre-existing hypertension complicating the puerperium