| O10.21 | Pre-existing hypertensive chronic kidney disease complicating pregnancy | NON-BILLABLE CODE |
| O10.211 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, first trimester | BILLABLE CODE |
| O10.212 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, second trimester | BILLABLE CODE |
| O10.213 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, third trimester | BILLABLE CODE |
| O10.219 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, unspecified trimester | BILLABLE CODE |
| O10.22 | Pre-existing hypertensive chronic kidney disease complicating childbirth | BILLABLE CODE |
| O10.23 | Pre-existing hypertensive chronic kidney disease complicating the puerperium | BILLABLE CODE |
