O35.13 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21 is O35.13 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
O30-O48: Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
Category O35
36 codes (33 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to O35.13:

  • Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › fetal (maternal care for) › chromosomal abnormality (conditions in Q90-Q99) › Trisomy 21

References

Related Codes

Parent Code

O35 Maternal care for known or suspected fetal abnormality and damage

Related Codes in O35

O35 Maternal care for known or suspected fetal abnormality and damage O35.0 Maternal care for (suspected) central nervous system malformation in fetus O35.00 Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified O35.01 Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum O35.02 Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly O35.03 Maternal care for (suspected) central nervous system malformation or damage in fetus, choroid plexus cysts O35.04 Maternal care for (suspected) central nervous system malformation or damage in fetus, encephalocele O35.05 Maternal care for (suspected) central nervous system malformation or damage in fetus, holoprosencephaly O35.06 Maternal care for (suspected) central nervous system malformation or damage in fetus, hydrocephaly O35.07 Maternal care for (suspected) central nervous system malformation or damage in fetus, microcephaly O35.08 Maternal care for (suspected) central nervous system malformation or damage in fetus, spina bifida O35.09 Maternal care for (suspected) other central nervous system malformation or damage in fetus O35.1 Maternal care for (suspected) chromosomal abnormality in fetus O35.10 Maternal care for (suspected) chromosomal abnormality in fetus, unspecified O35.11 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 13 O35.12 Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 18 O35.14 Maternal care for (suspected) chromosomal abnormality in fetus, Turner Syndrome O35.15 Maternal care for (suspected) chromosomal abnormality in fetus, sex chromosome abnormality O35.19 Maternal care for (suspected) chromosomal abnormality in fetus, other chromosomal abnormality O35.2 Maternal care for (suspected) hereditary disease in fetus
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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