O28 ICD-10-CM Code: Abnormal findings on antenatal screening of mother
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
O28Abnormal findings on antenatal screening of mother
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where O28 sits
- 1
Chapter 15
Pregnancy, childbirth and the puerperium (O00-O9A)
- 2
Section
Other maternal disorders predominantly related to pregnancy (O20-O29)
- 3
Category O28
Abnormal findings on antenatal screening of mother
- 4
Code O28
Abnormal findings on antenatal screening of mother
More specific choices
Codes under O28
O28 is a non-billable category. Choose the child code that best matches the documented diagnosis.
O28.0Abnormal hematological finding on antenatal screening of mother
O28.1Abnormal biochemical finding on antenatal screening of mother
O28.2Abnormal cytological finding on antenatal screening of mother
O28.3Abnormal ultrasonic finding on antenatal screening of mother
O28.4Abnormal radiological finding on antenatal screening of mother
O28.5Abnormal chromosomal and genetic finding on antenatal screening of mother
O28.8Other abnormal findings on antenatal screening of mother
O28.9Unspecified abnormal findings on antenatal screening of mother
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for O28.
Code first
No “code first” instruction is listed for O28.
Use additional code
No “use additional code” instruction is listed for O28.
Excludes1
Conditions that should not be reported together with this code.
- diagnostic findings classified elsewhere - see Alphabetical Index
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for O28.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code O28 mean?
O28 is the FY 2027 U.S. ICD-10-CM code for “Abnormal findings on antenatal screening of mother.”
Is O28 a billable or specific ICD-10-CM code?
No. O28 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is O28 located in ICD-10-CM?
O28 is listed in Chapter 15, Pregnancy, childbirth and the puerperium (O00-O9A), within Other maternal disorders predominantly related to pregnancy (O20-O29) (O20–O29), under category O28, Abnormal findings on antenatal screening of mother.
What coding notes are listed for O28?
No inclusion terms are listed for O28 in this reference record. No code-first instruction is listed. Excludes1 notes: diagnostic findings classified elsewhere - see Alphabetical Index. No Excludes2 note is listed.
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