O10.01Pre-existing essential hypertension complicating pregnancy
ICD-10-CM category (non-billable header) code — part of Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)
Subcategories (4)
- O10.011 Pre-existing essential htn comp pregnancy, first trimester
- O10.012 Pre-existing essential htn comp pregnancy, second trimester
- O10.013 Pre-existing essential htn comp pregnancy, third trimester
- O10.019 Pre-existing essential htn comp pregnancy, unsp trimester