O35.11X9

O35.11X9: Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 13, other fetus

Billable / specific codeICD-10-CM

O35.11X9 is a billable, specific ICD-10-CM code for maternal care for (suspected) chromosomal abnormality in fetus, trisomy 13, other fetus. It is valid for submission on a claim.

Check O35.11X9 with the rest of the claim: free scrubber

7th character "9": other fetus

One of the following 7th characters is to be assigned to each code under category O35. 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 O35 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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Maternal care for (suspected) chromosomal abnormality in fetus, Patau syndrome

Excludes1 inherited from the categories above O35.11X9

A category’s note binds every code beneath it.

Written on O35: Maternal care for known or suspected fetal abnormality and damage

encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

Other codes that can never be billed with O35.11X9

Their own Excludes1 notes name this code, so the conflict is not listed above.

Z03.7Encounter for suspected maternal and fetal conditions ruled out

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.