Is O33 a billable ICD-10-CM code?

No. O33 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does O33 sit in the tabular list?

Pregnancy, childbirth and the puerperium (O00-O9A), in the block Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48).

What cannot be coded together with O33?

O33 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

O33

O33 — Maternal care for disproportion

Non-billable headerICD-10-CM

O33 is a non-billable header ICD-10-CM code for maternal care for disproportion. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

disproportion with obstructed labor (O65-O66)

Includes

Conditions this code covers.

the listed conditions as a reason for observation, hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor

Other codes that can never be billed with O33

These codes carry an Excludes1 note pointing at O33. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O33 alone.

M95.5Acquired deformity of pelvis

Risk adjustment

O33 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 O33

10 child codes. Green means billable.

Questions about O33

Is O33 a billable ICD-10-CM code?: No. O33 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does O33 sit in the tabular list?: Pregnancy, childbirth and the puerperium (O00-O9A), in the block Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48).
What cannot be coded together with O33?: O33 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.