O28
⚠ Non-billable
Abnormal findings on antenatal screening of mother
ICD-10-CM · FY2026 · Pregnancy, Childbirth and the Puerperium
Code
O28
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 O28?
ICD-10-CM code O28 represents Abnormal findings on antenatal screening of mother. 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 O28 billable?
No. O28 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is O28 in?
O28 belongs to the Pregnancy, Childbirth and the Puerperium chapter (O00–O9A) of ICD-10-CM.
Related codes in the O28 category
O28.0
Abnormal hematological finding on antenatal screening of mother
Billable
O28.1
Abnormal biochemical finding on antenatal screening of mother
Billable
O28.2
Abnormal cytological finding on antenatal screening of mother
Billable
O28.3
Abnormal ultrasonic finding on antenatal screening of mother
Billable
O28.4
Abnormal radiological finding on antenatal screening of mother
Billable
O28.5
Abnormal chromosomal and genetic finding on antenatal screening of mother
Billable
O28.8
Other abnormal findings on antenatal screening of mother
Billable
O28.9
Unspecified abnormal findings on antenatal screening of mother
Billable
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