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919 Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester

O10.92 Unspecified pre-existing hypertension complicating childbirth
O10.93 Unspecified pre-existing hypertension complicating the puerperium

O11 Pre-existing hypertensive disorder with superimposed proteinuria

Includes: Conditions in Ol0 complicated by increased proteinuria
Superimposed pre-eclampsia
Use additional code from O10 to identify the type of hypertension
O11.1 Pre-existing hypertensive disorder with superimposed proteinuria, first trimester
O11.2 Pre-existing hypertensive disorder with superimposed proteinuria, second trimester
O11.3 Pre-existing hypertensive disorder with superimposed proteinuria, third trimester
O11.9 Pre-existing hypertensive disorder with superimposed proteinuria, unspecified trimester

O12 Gestational [pregnancy-induced] edema and proteinuria without hypertension

O12.0 Gestational edema
O12.00 Gestational edema, unspecified trimester
O12.01 Gestational edema, first trimester
O12.02 Gestational edema, second trimester
O12.03 Gestational edema, third trimester
O12.1 Gestational proteinuria
O12.10 Gestational proteinuria, unspecified trimester
O12.11 Gestational proteinuria, first trimester
O12.12 Gestational proteinuria, second trimester
O12.13 Gestational proteinuria, third trimester
O12.2 Gestational edema with proteinuria
O12.20 Gestational edema with proteinuria, unspecified trimester
O12.21 Gestational edema with proteinuria, first trimester
O12.22 Gestational edema with proteinuria, second trimester
O12.23 Gestational edema with proteinuria, third trimester

O13 Gestational [pregnancy-induced] hypertension without significant proteinuria

Includes: gestational hypertension NOS
O13.1 Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester
O13.