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    v1.0.28
    OpenPayerBilling CodesOther maternal disorders predominantly related to pregnancyICD-10-CM o28-abnormal-antenatal-screening-findings
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    ICD-10-CM Code For Abnormal Findings On Antenatal Screening Of Mother: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group O28 includes abnormal findings on antenatal screening of the mother, covering abnormal laboratory, imaging, or genetic screening results identified during pregnancy. These ICD-10-CM diagnosis codes are used to document prenatal screening abnormalities, capturing the type and clinical significance of the abnormal result or finding. Accurate coding within the ICD-10-CM O28 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM O28: Abnormal Findings On Antenatal Screening Of Mother Overview

    This group captures abnormal results from antenatal maternal screening tests that indicate potential maternal or fetal conditions during pregnancy. It targets prenatal screening findings such as abnormal laboratory, imaging, or genetic test results that require documentation. Accurate coding matters because it supports appropriate clinical records and helps ensure correct claim processing and reimbursement.

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    When to Use

    Use a code from this group when antenatal screening tests for the mother return abnormal results that require documentation in the medical record. Codes from this group are appropriate when the abnormal screening result is the focus of care, follow-up, or further diagnostic evaluation.

    ICD-10-CM Codes

    8 rows

    ICD-10-CM CodeDescription
    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

    DRG Codes

    6 rows

    DRG CodeDescription
    817Other Antepartum Diagnoses with O.R. Procedures with MCC
    818Other Antepartum Diagnoses with O.R. Procedures with CC
    819Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
    831Other Antepartum Diagnoses without O.R. Procedures with MCC
    832Other Antepartum Diagnoses without O.R. Procedures with CC
    833Other Antepartum Diagnoses without O.R. Procedures without CC/MCC

    Related Codes

    O20-HEMORRHAGE-IN-EARLY-PREGNANCY

    ICD-10-CM Code For Hemorrhage In Early Pregnancy: Group Overview

    O21-EXCESSIVE-VOMITING-IN-PREGNANCY

    ICD-10-CM Code For Excessive Vomiting In Pregnancy: Group Overview

    O22-VENOUS-COMPLICATIONS-AND-HEMORRHOIDS

    ICD-10-CM Code For Venous Complications And Hemorrhoids In Pregnancy: Group Overview

    O23-INFECTIONS-OF-GENITOURINARY-TRACT

    ICD-10-CM Code For Infections Of Genitourinary Tract In Pregnancy: Group Overview

    O24-DIABETES-MELLITUS-IN-PREGNANCY

    ICD-10-CM Code For Diabetes Mellitus In Pregnancy, Childbirth, And The Puerperium: Group Overview

    O25-MALNUTRITION-IN-PREGNANCY

    ICD-10-CM Code For Malnutrition In Pregnancy Childbirth And The Puerperium: Group Overview

    O26-MATERNAL-CARE-OTHER-CONDITIONS

    ICD-10-CM Code For Maternal Care For Other Conditions Predominantly Related To Pregnancy: Group Overview

    O29-COMPLICATIONS-OF-ANESTHESIA

    ICD-10-CM Code For Complications Of Anesthesia During Pregnancy: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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