ICD-10-CM · Chapter 15 · O00-O9A
O10 Pre-existing hypertension complicating pregnancy, childbirth and the puerperium
Includes
- pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium
Excludes 2 (not included here)
- pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| O10..0 | Pre-existing essential hypertension complicating pregnancy, childbirth and the puerperium | No |
| O10..01 | Pre-existing essential hypertension complicating pregnancy | No |
| O10..011 | Pre-existing essential hypertension complicating pregnancy, first trimester | Yes |
| O10..012 | Pre-existing essential hypertension complicating pregnancy, second trimester | Yes |
| O10..013 | Pre-existing essential hypertension complicating pregnancy, third trimester | Yes |
| O10..019 | Pre-existing essential hypertension complicating pregnancy, unspecified trimester | Yes |
| O10..02 | Pre-existing essential hypertension complicating childbirth | Yes |
| O10..03 | Pre-existing essential hypertension complicating the puerperium | Yes |
| O10..1 | Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium | No |
| O10..11 | Pre-existing hypertensive heart disease complicating pregnancy | No |
| O10..111 | Pre-existing hypertensive heart disease complicating pregnancy, first trimester | Yes |
| O10..112 | Pre-existing hypertensive heart disease complicating pregnancy, second trimester | Yes |
| O10..113 | Pre-existing hypertensive heart disease complicating pregnancy, third trimester | Yes |
| O10..119 | Pre-existing hypertensive heart disease complicating pregnancy, unspecified trimester | Yes |
| O10..12 | Pre-existing hypertensive heart disease complicating childbirth | Yes |
| O10..13 | Pre-existing hypertensive heart disease complicating the puerperium | Yes |
| O10..2 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperium | No |
| O10..21 | Pre-existing hypertensive chronic kidney disease complicating pregnancy | No |
| O10..211 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, first trimester | Yes |
| O10..212 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, second trimester | Yes |
| O10..213 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, third trimester | Yes |
| O10..219 | Pre-existing hypertensive chronic kidney disease complicating pregnancy, unspecified trimester | Yes |
| O10..22 | Pre-existing hypertensive chronic kidney disease complicating childbirth | Yes |
| O10..23 | Pre-existing hypertensive chronic kidney disease complicating the puerperium | Yes |
| O10..3 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, childbirth and the puerperium | No |
| O10..31 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy | No |
| O10..311 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, first trimester | Yes |
| O10..312 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, second trimester | Yes |
| O10..313 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, third trimester | Yes |
| O10..319 | Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimester | Yes |
| O10..32 | Pre-existing hypertensive heart and chronic kidney disease complicating childbirth | Yes |
| O10..33 | Pre-existing hypertensive heart and chronic kidney disease complicating the puerperium | Yes |
| O10..4 | Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium | No |
| O10..41 | Pre-existing secondary hypertension complicating pregnancy | No |
| O10..411 | Pre-existing secondary hypertension complicating pregnancy, first trimester | Yes |
| O10..412 | Pre-existing secondary hypertension complicating pregnancy, second trimester | Yes |
| O10..413 | Pre-existing secondary hypertension complicating pregnancy, third trimester | Yes |
| O10..419 | Pre-existing secondary hypertension complicating pregnancy, unspecified trimester | Yes |
| O10..42 | Pre-existing secondary hypertension complicating childbirth | Yes |
| O10..43 | Pre-existing secondary hypertension complicating the puerperium | Yes |
| O10..9 | Unspecified pre-existing hypertension complicating pregnancy, childbirth and the puerperium | No |
| O10..91 | Unspecified pre-existing hypertension complicating pregnancy | No |
| O10..911 | Unspecified pre-existing hypertension complicating pregnancy, first trimester | Yes |
| O10..912 | Unspecified pre-existing hypertension complicating pregnancy, second trimester | Yes |
| O10..913 | Unspecified pre-existing hypertension complicating pregnancy, third trimester | Yes |
| O10..919 | Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester | Yes |
| O10..92 | Unspecified pre-existing hypertension complicating childbirth | Yes |
| O10..93 | Unspecified pre-existing hypertension complicating the puerperium | Yes |
Last reviewed: September 2026