O10.4 - Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium
O10.41 - Pre-existing secondary hypertension complicating pregnancy
O10.411 - Pre-existing secondary hypertension complicating pregnancy, first trimester
O10.412 - Pre-existing secondary hypertension complicating pregnancy, second trimester
O10.413 - Pre-existing secondary hypertension complicating pregnancy, third trimester
O10.419 - Pre-existing secondary hypertension complicating pregnancy, unspecified trimester