Non-Billable / Non-Specific Code
ICD-10-CM O28 is the diagnosis code for Abnormal findings on antenatal screening of mother. This code falls under the section "Other maternal disorders predominantly related to pregnancy" within Chapter 15 — Pregnancy, childbirth and the puerperium (O00-O9A). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as O28. They are mutually exclusive:
Understanding where O28 sits in the ICD-10-CM classification helps ensure proper coding:
No, O28 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
O28 is the ICD-10-CM diagnosis code for "Abnormal findings on antenatal screening of mother". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
O28 is located in Section O20-O29 — "Other maternal disorders predominantly related to pregnancy" within Chapter 15 of the ICD-10-CM Tabular List.
O28 has 8 sub-code(s) that provide more specific detail: O28.0, O28.1, O28.2, O28.3, O28.4 and more.
Use O28 when the patients documented diagnosis matches "Abnormal findings on antenatal screening of mother" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Abnormal findings on antenatal screening of mother is O28.
No, O28 is non-billable. Use a more specific sub-code for primary diagnosis billing.
O28 is in Chapter 15 of the ICD-10-CM Tabular List.
Type 1 Excludes for O28 include: diagnostic findings classified elsewhere - see Alphabetical Index.
Yes, O28 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.