O28: Abnormal findings on antenatal screening of mother

Codes under O28 (Abnormal findings on antenatal screening of mother). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
O28.0	Abnormal hematological finding on antenatal screening of mother	✓
O28.1	Abnormal biochemical finding on antenatal screening of mother	✓
O28.2	Abnormal cytological finding on antenatal screening of mother	✓
O28.3	Abnormal ultrasonic finding on antenatal screening of mother	✓
O28.4	Abnormal radiological finding on antenatal screening of mother	✓
O28.5	Abnormal chromosomal and genetic finding on antenatal screening of mother	✓
O28.8	Other abnormal findings on antenatal screening of mother	✓
O28.9	Unspecified abnormal findings on antenatal screening of mother	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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