All ICD10 Codes
Q98Non-billable

Other sex chromosome abnormalities, male phenotype, not elsewhere classified

Congenital Malformations, Deformations and Chromosomal Abnormalities·Chromosomal abnormalities, not elsewhere classified (Q90-Q99)·category·FY 2026

Use a more specific code (9 billable)
Q98.0Klinefelter syndrome karyotype 47, XXYQ98.1Klinefelter syndrome, male with more than two X chromosomesQ98.3Other male with 46, XX karyotypeQ98.4Klinefelter syndrome, unspecifiedQ98.5Karyotype 47, XYYQ98.6Male with structurally abnormal sex chromosomeQ98.7Male with sex chromosome mosaicismQ98.8Other specified sex chromosome abnormalities, male phenotypeQ98.9Sex chromosome abnormality, male phenotype, unspecified

CH17 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)

Q90-Q99 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • mitochondrial metabolic disorders (E88.4-)

Clinical Hierarchy

BillableHas subcodes
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q90-Q99Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Q98Other sex chromosome abnormalities, male phenotype, not elsewhere classifiedNot billable
Q98.0Klinefelter syndrome karyotype 47, XXYBillable
Q98.1Klinefelter syndrome, male with more than two X chromosomesBillable
Q98.3Other male with 46, XX karyotypeBillable
Q98.4Klinefelter syndrome, unspecifiedBillable
Q98.5Karyotype 47, XYYBillable
Q98.6Male with structurally abnormal sex chromosomeBillable
Q98.7Male with sex chromosome mosaicismBillable
Q98.8Other specified sex chromosome abnormalities, male phenotypeBillable
Q98.9Sex chromosome abnormality, male phenotype, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.