O10.91
O10.91: Unspecified pre-existing hypertension complicating pregnancy
Non-billable headerICD-10-CM
O10.91 is a non-billable header ICD-10-CM code for unspecified pre-existing hypertension complicating pregnancy. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes2 inherited from the categories above O10.91
Not part of this code, but both may be coded when both are present.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead O10.91
4 child codes. Green means billable.
- O10.911Unspecified pre-existing hypertension complicating pregnancy, first trimester
- O10.912Unspecified pre-existing hypertension complicating pregnancy, second trimester
- O10.913Unspecified pre-existing hypertension complicating pregnancy, third trimester
- O10.919Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester