O10.01
Header — not billablePre-existing essential hypertension complicating pregnancy
The ICD-10 code for pre-existing essential hypertension complicating pregnancy is O10.01.
O10.01 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under O10.01
- O10.011Pre-existing essential hypertension complicating pregnancy, first trimester
- O10.012Pre-existing essential hypertension complicating pregnancy, second trimester
- O10.013Pre-existing essential hypertension complicating pregnancy, third trimester
- O10.019Pre-existing essential hypertension complicating pregnancy, unspecified trimester
Related codes in this category
- O10.02Pre-existing essential hypertension complicating childbirth
- O10.03Pre-existing essential hypertension complicating the puerperium
- O10.01Pre-existing essential hypertension complicating pregnancynon-billable header