O28Header code — not billable
Abnormal findings on antenatal screening of mother
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O28
- Effective date
- October 1, 2026
Related codes in category O28
O28.0Abnormal hematolog finding on antenatal screening of motherYesO28.1Abnormal biochemical finding on antenat screening of motherYesO28.2Abnormal cytolog finding on antenatal screening of motherYesO28.3Abnormal ultrasonic finding on antenatal screening of motherYesO28.4Abnormal radiolog finding on antenatal screening of motherYesO28.5Abn chromsoml and genetic find on antenat screen of motherYesO28.8Other abnormal findings on antenatal screening of motherYesO28.9Unsp abnormal findings on antenatal screening of motherYes
Frequently asked questions
What is ICD-10 code O28?
O28 is an ICD-10-CM diagnosis code for Abnormal findings on antenatal screening of mother.
Is O28 a billable code?
No. O28 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is O28 in?
O28 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O28 become effective?
O28 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O28?
O28 belongs to category O28, which includes 8 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.