2025 ICD-10-CM code O28.9
(Published) Effective Date: N/A Revision Date: N/A Maternal disorders - Other maternal disorders predominantly related to pregnancy Chapter 18: Pregnancy, childbirth, and the puerperium Feed
Unspecified abnormal findings on antenatal screening of the mother.
The medical necessity of antenatal screening is typically established by clinical guidelines and professional medical standards, aiming to detect conditions that could affect the pregnancy or the fetus.Documentation should indicate the reason for conducting the screening and the rationale for using O28.9 if further evaluation is pending.
Obstetrician-gynecologist, maternal-fetal medicine specialist
In simple words: This code means that there were some unexpected or abnormal results from tests done on the mother before her baby was born, but the doctors don't know exactly what is wrong.
This code is used to report unspecified abnormal findings detected during antenatal (before birth) screening of the mother.It encompasses any abnormal results not specified elsewhere within the O28 code range (O28.0-O28.8), which includes hematological, biochemical, cytological, ultrasonic, radiological, chromosomal, and genetic findings.The code should be used when a more specific code from the O28 range is not applicable.
Example 1: A pregnant woman undergoes a routine blood test, and the results show an unexplained elevation in liver enzymes.O28.9 is used to code the abnormal biochemical finding., An ultrasound during a routine prenatal checkup shows an anomaly in the fetal anatomy (e.g., cardiac abnormality), but additional testing is needed to determine the nature and implications. O28.9 can be used to report the abnormal ultrasonic findings., A pregnant patient receives a screening test result that's outside the normal range, but further investigation is required to establish the cause of the abnormal finding. O28.9 could be used in this case.
Complete medical record with documentation of the antenatal screening tests performed (e.g., blood tests, ultrasound),the specific abnormal results, and any further investigations or interventions. In outpatient settings, appropriate diagnostic confidence indicators (A, G, V, or Z) should be appended to the code.
** This code should be used cautiously and only when no other more specific code from O28.0-O28.8 applies. It is crucial to document the reason for selecting this code and the context in which it is used in the medical record.
- Payment Status: Active
- Specialties:Obstetrics, Gynecology, Maternal-Fetal Medicine
- Place of Service:Office, Hospital (inpatient or outpatient), Birthing Center