Is O10 a billable ICD-10-CM code?

No. O10 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does O10 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).

O10

O10 — Pre-existing hypertension complicating pregnancy, childbirth and the puerperium

Non-billable headerICD-10-CM

O10 is a non-billable header ICD-10-CM code for pre-existing hypertension complicating pregnancy, childbirth and the puerperium. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)

Includes

Conditions this code covers.

pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium

Other codes that can never be billed with O10

These codes carry an Excludes1 note pointing at O10. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O10 alone.

I10Essential (primary) hypertension

Risk adjustment

O10 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 O10

6 child codes. Green means billable.

Questions about O10

Is O10 a billable ICD-10-CM code?: No. O10 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does O10 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).