O35 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Maternal care for known or suspected fetal abnormality and damage.
Includes
The listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy
Code also
Any associated maternal condition
Type 1 excludes
Encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
Seventh character note
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.
Seventh character extensions
0: not applicable or unspecified
1: fetus 1
2: fetus 2
3: fetus 3
4: fetus 4
5: fetus 5
9: other fetus
Codes
O35.0
Maternal care for (suspected) central nervous system malformation in fetus
O35.1
Maternal care for (suspected) chromosomal abnormality in fetus
O35.A
Maternal care for other (suspected) fetal abnormality and damage, fetal facial anomalies
O35.B
Maternal care for other (suspected) fetal abnormality and damage, fetal cardiac anomalies
O35.C
Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies
O35.D
Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies
O35.E
Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies
O35.F
Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk
O35.G
Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies
O35.H
Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies
O35.2
Maternal care for (suspected) hereditary disease in fetus
O35.3
Maternal care for (suspected) damage to fetus from viral disease in mother
O35.4
Maternal care for (suspected) damage to fetus from alcohol
O35.5
Maternal care for (suspected) damage to fetus by drugs
O35.6
Maternal care for (suspected) damage to fetus by radiation
O35.7
Maternal care for (suspected) damage to fetus by other medical procedures
O35.8
Maternal care for other (suspected) fetal abnormality and damage
O35.9
Maternal care for (suspected) fetal abnormality and damage, unspecified
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code