Q98
Q98: Other sex chromosome abnormalities, male phenotype, not elsewhere classified
Non-billable headerICD-10-CM
Q98 is a non-billable header ICD-10-CM code for other sex chromosome abnormalities, male phenotype, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with Q98
Their own Excludes1 notes name this code, so the conflict is not listed above.
- E29Testicular dysfunction
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead Q98
9 child codes. Green means billable.
- Q98.0Klinefelter syndrome karyotype 47, XXY
- Q98.1Klinefelter syndrome, male with more than two X chromosomes
- Q98.3Other male with 46, XX karyotype
- Q98.4Klinefelter syndrome, unspecified
- Q98.5Karyotype 47, XYY
- Q98.6Male with structurally abnormal sex chromosome
- Q98.7Male with sex chromosome mosaicism
- Q98.8Other specified sex chromosome abnormalities, male phenotype
- Q98.9Sex chromosome abnormality, male phenotype, unspecified