Q98 — Other sex chromosome abnormalities, male phenotype, not elsewhere classified
Is Q98 billable?
No — Q98 is a non-billable header code. Q98 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath Q98.
Billable codes under this header
- 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
Q98 at a glance
| Code | Q98 |
|---|---|
| Description | Other sex chromosome abnormalities, male phenotype, not elsewhere classified |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes2 — not included here — inherited from Chapter 17
The conditions below are not part of Q98, but a patient may have both at the same time. When documentation supports it, Q98 and the excluded code may both be reported.
- inborn errors of metabolism (E70-E88)
Excludes2 — not included here — inherited from Q90-Q99
The conditions below are not part of Q98, but a patient may have both at the same time. When documentation supports it, Q98 and the excluded code may both be reported.
- mitochondrial metabolic disorders (E88.4-)
What codes fall under Q98? (9)
- 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
How long has Q98 existed?
Q98 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.