| O1022 | Pre-existing hypertensive chronic kidney disease complicating childbirth |
| O1023 | Pre-existing hypertensive chronic kidney disease complicating the puerperium |
| O103 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperium |
| O1031 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy |
| O10311 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, first trimester |
| O10312 | Pre-exist hyp heart and chr kidney dis comp preg, second tri Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, second trimester |
| O10313 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, third trimester |
| O10319 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimester |
| O1032 | Pre-exist hyp heart and chronic kidney disease comp chldbrth Pre-existing hypertensive heart and chronic kidney disease complicating childbirth |
| O1033 | Pre-existing hypertensive heart and chronic kidney disease complicating the puerperium |
| O104 | Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium |
| O1041 | Pre-existing secondary hypertension complicating pregnancy |
| O10411 | Pre-existing secondary hypertension complicating pregnancy, first trimester |
| O10412 | Pre-existing secondary hypertension complicating pregnancy, second trimester |
| O10413 | Pre-existing secondary hypertension complicating pregnancy, third trimester |
| O10419 | Pre-existing secondary hypertension complicating pregnancy, unspecified trimester |
| O1042 | Pre-existing secondary hypertension complicating childbirth |
| O1043 | Pre-existing secondary hypertension complicating the puerperium |
| O109 | Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium |
| O1091 | Unspecified pre-existing hypertension complicating pregnancy Unspecified pre-existing hypertension complicating pregnancy |
| O10911 | Unspecified pre-existing hypertension complicating pregnancy, first trimester |
| O10912 | Unspecified pre-existing hypertension complicating pregnancy, second trimester |
| O10913 | Unspecified pre-existing hypertension complicating pregnancy, third trimester |
| O10919 | Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester |
| O1092 | Unspecified pre-existing hypertension complicating childbirth |
| O1093 | Unspecified pre-existing hypertension complicating the puerperium |
| O11 | Pre-existing hypertension with pre-eclampsia |
| O111 | Pre-existing hypertension with pre-eclampsia, first trimester |
| O112 | Pre-existing hypertension with pre-eclampsia, second trimester |
| O113 | Pre-existing hypertension with pre-eclampsia, third trimester |
| O114 | Pre-existing hypertension with pre-eclampsia, complicating childbirth |
| O115 | Pre-existing hypertension with pre-eclampsia, complicating the puerperium |
| O119 | Pre-existing hypertension with pre-eclampsia, unsp trimester Pre-existing hypertension with pre-eclampsia, unspecified trimester |
| O12 | Gestational [pregnancy-induced] edema and proteinuria without hypertension |
| O120 | Gestational edema |
| O1200 | Gestational edema, unspecified trimester |
| O1201 | Gestational edema, first trimester |
| O1202 | Gestational edema, second trimester |
| O1203 | Gestational edema, third trimester |
| O1204 | Gestational edema, complicating childbirth |
| O1205 | Gestational edema, complicating the puerperium |
| O121 | Gestational proteinuria |
| O1210 | Gestational proteinuria, unspecified trimester |
| O1211 | Gestational proteinuria, first trimester |
| O1212 | Gestational proteinuria, second trimester |
| O1213 | Gestational proteinuria, third trimester |
| O1214 | Gestational proteinuria, complicating childbirth |
| O1215 | Gestational proteinuria, complicating the puerperium |
| O122 | Gestational edema with proteinuria |
| O1220 | Gestational edema with proteinuria, unspecified trimester |