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Q98Non-billableSave

Q98 - Other sex chromosome abnormalities, male phenotype, not elsewhere classified

ICD-10-CM Chapter 17: Congenital malformations, deformations and chromosomal abnormalities · Q90-Q99 Chromosomal abnormalities, not elsewhere classified (Q90-Q99) · Top-level category · FY2027

Coding Guidance

Q98 is a non-billable heading. Report one of the 9 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 2 — Not Included HereFrom Q90-Q99 Chromosomal abnormalities, not elsewhere classified (Q90-Q99)

Not part of this code; report both codes when the patient has both conditions.

  • mitochondrial metabolic disorders (E88.4-)
Excludes 2 — Not Included HereFrom Chapter Q00-Q99

Not part of this code; report both codes when the patient has both conditions.

  • inborn errors of metabolism (E70-E88)
NotesFrom Chapter Q00-Q99

Instructional notes from the ICD-10-CM tabular list.

  • Codes from this chapter are not for use on maternal records

More Specific Codes (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→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with Q98.