| O10.31 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy | NON-BILLABLE CODE |
| O10.311 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, first trimester | BILLABLE CODE |
| O10.312 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, second trimester | BILLABLE CODE |
| O10.313 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, third trimester | BILLABLE CODE |
| O10.319 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimester | BILLABLE CODE |
| O10.32 | Pre-existing hypertensive heart and chronic kidney disease complicating childbirth | BILLABLE CODE |
| O10.33 | Pre-existing hypertensive heart and chronic kidney disease complicating the puerperium | BILLABLE CODE |
