O35.13X9
✓ BillableMaternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, other fetus
Pregnancy, childbirth and the puerperium (O00-O9A)
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
Clinical Description
ICD-10-CM code O35.13X9 represents maternal care for (suspected) chromosomal abnormality in fetus, trisomy 21, other fetus. This code falls under the Pregnancy, childbirth and the puerperium (O00-O9A) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory. Coders should note that O35.13X9 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code O35.13X9?
ICD-10-CM code O35.13X9 is "Maternal care for (suspected) chromosomal abnormality in fetus, Trisomy 21, other fetus". It belongs to the category: Pregnancy, childbirth and the puerperium (O00-O9A).
Is O35.13X9 a billable ICD-10 code?
Yes, O35.13X9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with O35.13X9?
O35.13X9 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Related Codes in O35.13
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)