| Full description | Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium |
| Billable | No — use a more specific child code |
| Chapter | Chapter 15: Pregnancy, childbirth and the puerperium (O00-O9A) |
| Section | Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16) |
| Parent code | O10 — Pre-existing hypertension compl preg/chldbrth |