| O99.350 | Diseases of the nervous system complicating pregnancy, unspecified trimester | BILLABLE CODE |
| O99.351 | Diseases of the nervous system complicating pregnancy, first trimester | BILLABLE CODE |
| O99.352 | Diseases of the nervous system complicating pregnancy, second trimester | BILLABLE CODE |
| O99.353 | Diseases of the nervous system complicating pregnancy, third trimester | BILLABLE CODE |
| O99.354 | Diseases of the nervous system complicating childbirth | BILLABLE CODE |
| O99.355 | Diseases of the nervous system complicating the puerperium | BILLABLE CODE |
