O11.1
BillablePre-existing hypertension with pre-eclampsia, first trimester
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
A pregnant woman in her first trimester who has pre-existing high blood pressure and develops pre-eclampsia (a serious pregnancy complication with high blood pressure and protein in urine).
Coding Tips
- •Confirm both pre-existing hypertension and pre-eclampsia are documented; pre-eclampsia requires specific clinical findings
- •Verify first trimester timing and ensure pre-eclampsia diagnosis is clearly stated in clinical documentation
Code Hierarchy
└O11Pre-existing hypertension with pre-eclampsia└O11.1Pre-existing hypertension with pre-eclampsia, first trimester
└O11.1Pre-existing hypertension with pre-eclampsia, first trimester