Q98

Classification

Category:Congenital malformations, deformations and chromosomal abnormalities

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Coding Guidance

Q98 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.

Excludes 2

From Q00-Q99

More Specific Codes

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

Q98.9

Sex chromosome abnormality, male phenotype, unspecified

External Resources

2025 ICD-10 guidelines from CMS.gov