O28
Header — not billableAbnormal findings on antenatal screening of mother
The ICD-10 code for abnormal findings on antenatal screening of mother is O28.
O28 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 8 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- diagnostic findings classified elsewhere - see Alphabetical Index
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under O28
- 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
Related codes in this category
- O20Hemorrhage in early pregnancynon-billable header
- O21Excessive vomiting in pregnancynon-billable header
- O22Venous complications and hemorrhoids in pregnancynon-billable header
- O23Infections of genitourinary tract in pregnancynon-billable header
- O24Diabetes mellitus in pregnancy, childbirth, and the puerperiumnon-billable header
- O25Malnutrition in pregnancy, childbirth and the puerperiumnon-billable header
- O26Maternal care for other conditions predominantly related to pregnancynon-billable header
- O29Complications of anesthesia during pregnancynon-billable header
- O28Abnormal findings on antenatal screening of mothernon-billable header