O35.4XX3 Maternal care for (suspected) damage to fetus from alcohol, fetus 3

ICD-10-CM Code O35.4XX3 Reference

ICD-10-CM code O35.4XX3 is labeled "Maternal care for (suspected) damage to fetus from alcohol, fetus 3." Public source documents list this code alongside related variants for different fetus numbers. Clinical literature establishes that prenatal alcohol use is a preventable cause of birth defects and developmental disabilities, with no known safe level of alcohol consumption during pregnancy. 1 2 3

Plain-language overview

Prenatal exposure to alcohol may have an adverse impact on a developing fetus, and alcohol use during pregnancy is a highly preventable cause of birth defects and developmental disabilities. There is no known safe level of alcohol use while pregnant. 1

What this code represents

The official display label for ICD-10-CM code O35.4XX3 is "Maternal care for (suspected) damage to fetus from alcohol, fetus 3." This exact alphanumeric code and its descriptor appear in multiple source lists. 2 3

Coding details

Code O35.4XX3 is listed among a series of codes that include O35.4XX0 for an unspecified fetus, O35.4XX1 for fetus 1, O35.4XX2 for fetus 2, O35.4XX4 for fetus 4, and O35.4XX5 for fetus 5. 3

The source documents list O35.4XX3 alongside an O35.4XX9 code designated for "other fetus," providing distinct alphanumeric variants for maternal care for suspected damage to fetus from alcohol. 2 3

Clinical context

An infant born to a mother who drank alcohol while pregnant may manifest alcohol-related birth defects, alcohol-related neurodevelopmental disorders, or fetal alcohol spectrum disorders, which include a wide range of effects from mild to severe. 1

Documentation considerations

The code descriptor for O35.4XX3 explicitly includes the specification of "fetus 3," and the source listing places it within a sequence of codes that differentiate the exact fetus number. 2 3

What the sources add

While the clinical source details the adverse impacts and preventability of prenatal alcohol use, the coding sources provide the specific alphanumeric structure and official labels used to classify maternal care for this suspected fetal damage. 1 2 3

Sources

1. Maternal Substance Use: Consequences, Identification, and Interventions — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Alcohol-Related Hospitalizations During the Initial COVID-19 Lockdown in Massachusetts: An Interrupted Time-Series Analysis — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
3. Prenatal Obstetrical Ultrasound Appendix A: High Risk ... — hpo-docs.jh.edu; accessed 2026-07-25.