Is O11 a billable ICD-10-CM code?

No. O11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does O11 sit in the tabular list?

Pregnancy, childbirth and the puerperium (O00-O9A), in the block Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16).

O11

O11 — Pre-existing hypertension with pre-eclampsia

Non-billable headerICD-10-CM

O11 is a non-billable header ICD-10-CM code for pre-existing hypertension with pre-eclampsia. It cannot be billed on its own: choose one of the more specific child codes below.

Use additional code

Add a secondary code to capture the detail described below.

code from O10 to identify the type of hypertension

Includes

Conditions this code covers.

conditions in O10 complicated by pre-eclampsia
pre-eclampsia superimposed pre-existing hypertension

Other codes that can never be billed with O11

These codes carry an Excludes1 note pointing at O11. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O11 alone.

O14Pre-eclampsia
I10Essential (primary) hypertension

Risk adjustment

O11 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead O11

6 child codes. Green means billable.

Questions about O11

Is O11 a billable ICD-10-CM code?: No. O11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does O11 sit in the tabular list?: Pregnancy, childbirth and the puerperium (O00-O9A), in the block Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16).