Q98.9
Sex chromosome abnormality, male phenotype, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 8 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 1 never code together
Instructional notes
No further instructional notes apply.
Index entries leading here 3
- Abnormal, abnormality, abnormalities — see also Anomaly
- Anomaly, anomalous (congenital) (unspecified type) Q89.9
- Syndrome — see also Disease
Alongside this code 8 same parent — Q98
Q98.0 Klinefelter syndrome karyotype 47, XXY Q98.1 Klinefelter syndrome, male with more than two X chromosomes Q98.3 Other male with 46, XX karyotype Q98.4 Klinefelter syndrome, unspecified Q98.5 Karyotype 47, XYY Q98.6 Male with structurally abnormal sex chromosome Q98.7 Male with sex chromosome mosaicism Q98.8 Other specified sex chromosome abnormalities, male phenotype
Medications 2
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.