O11Pre-existing hypertension with pre-eclampsia
ICD-10-CM category (non-billable header) code — part of Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)
Coding Notes
Includes
- conditions in O10 complicated by pre-eclampsia
- pre-eclampsia superimposed pre-existing hypertension
Use Additional Code
- code from O10 to identify the type of hypertension
Subcategories (6)
- O11.1 Pre-existing hypertension w pre-eclampsia, first trimester
- O11.2 Pre-existing hypertension w pre-eclampsia, second trimester
- O11.3 Pre-existing hypertension w pre-eclampsia, third trimester
- O11.4 Pre-existing htn with pre-eclampsia, comp childbirth
- O11.5 Pre-existing htn with pre-eclampsia, comp the puerperium
- O11.9 Pre-existing hypertension with pre-eclampsia, unsp trimester