| O10.0 | Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium Any condition in I10 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
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	| O10.1 | Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium Any condition in I11.- specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
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	| O10.2 | Pre-existing hypertensive renal disease complicating pregnancy, childbirth and the puerperium Any condition in I12.- specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
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	| O10.3 | Pre-existing hypertensive heart and renal disease complicating pregnancy, childbirth and the puerperium Any condition in I13.- specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
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	| O10.4 | Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium Any condition in I15.- specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
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	| O10.9 | Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium 
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