O35
⚠ Non-billable
Maternal care for known or suspected fetal abnormality and damage
ICD-10-CM · FY2026 · Pregnancy, Childbirth and the Puerperium
Code
O35
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Pregnancy, Childbirth and the Puerperium
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code O35?
ICD-10-CM code O35 represents Maternal care for known or suspected fetal abnormality and damage. It is a non-billable header code requiring a more specific subcategory in the Pregnancy, Childbirth and the Puerperium chapter, effective October 1, 2025 – September 30, 2026.
Is O35 billable?
No. O35 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is O35 in?
O35 belongs to the Pregnancy, Childbirth and the Puerperium chapter (O00–O9A) of ICD-10-CM.
Related codes in the O35 category
O35.0
Maternal care for (suspected) central nervous system malformation in fetus
Non-billable
O35.1
Maternal care for (suspected) chromosomal abnormality in fetus
Non-billable
O35.A
Maternal care for other (suspected) fetal abnormality and damage, fetal facial anomalies
Non-billable
O35.B
Maternal care for other (suspected) fetal abnormality and damage, fetal cardiac anomalies
Non-billable
O35.C
Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies
Non-billable
O35.D
Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies
Non-billable
O35.E
Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies
Non-billable
O35.F
Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk
Non-billable
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