O28.5
Abnormal chromosomal and genetic finding on antenatal screening of mother
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 8 never code together
Instructional notes 7
O00-O9Achapter
Notes
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Use additional code
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.Z3A
Index entries leading here 2
- Pregnancy (single) (uterine) Z33.1
- Findings, abnormal, inconclusive, without diagnosis — see also Abnormal
Alongside this code 7 same parent — O28
O28.0 Abnormal hematolog finding on antenatal screening of mother O28.1 Abnormal biochemical finding on antenat screening of mother O28.2 Abnormal cytolog finding on antenatal screening of mother O28.3 Abnormal ultrasonic finding on antenatal screening of mother O28.4 Abnormal radiolog finding on antenatal screening of mother O28.8 Other abnormal findings on antenatal screening of mother O28.9 Unsp abnormal findings on antenatal screening of mother
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.