Is O12 a billable ICD-10-CM code?

No. O12 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does O12 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).

O12

O12 — Gestational [pregnancy-induced] edema and proteinuria without hypertension

Non-billable headerICD-10-CM

O12 is a non-billable header ICD-10-CM code for gestational [pregnancy-induced] edema and proteinuria without hypertension. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with O12

These codes carry an Excludes1 note pointing at O12. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O12 alone.

R60Edema, not elsewhere classified
R80Proteinuria

Risk adjustment

O12 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 O12

3 child codes. Green means billable.

Questions about O12

Is O12 a billable ICD-10-CM code?: No. O12 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does O12 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).