Is O36 a billable ICD-10-CM code?

No. O36 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does O36 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 O36?

O36 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

O36

O36 — Maternal care for other fetal problems

Non-billable headerICD-10-CM

O36 is a non-billable header ICD-10-CM code for maternal care for other fetal problems. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

One of the following 7th characters is to be assigned to each code under category O36. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O36 that has a 7th character of 1 through 9.

0: not applicable or unspecified
1: fetus 1
2: fetus 2
3: fetus 3
4: fetus 4
5: fetus 5
9: other fetus

Excludes1 — never code together

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

encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
placental transfusion syndromes (O43.0-)

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.

labor and delivery complicated by fetal stress (O77.-)

Includes

Conditions this code covers.

the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy

Other codes that can never be billed with O36

These codes carry an Excludes1 note pointing at O36. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O36 alone.

O00.0Abdominal pregnancy
O02.1Missed abortion
O36.2Maternal care for hydrops fetalis
P95Stillbirth
R76.0Raised antibody titer
Z33.2Encounter for elective termination of pregnancy
Z03.7Encounter for suspected maternal and fetal conditions ruled out

Risk adjustment

O36 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 O36

9 child codes. Green means billable.

Questions about O36

Is O36 a billable ICD-10-CM code?: No. O36 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does O36 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 O36?: O36 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.