ICD-10 diagnosis code
Q98 Other sex chromosome abnormalities, male phenotype, not elsewhere classified
Q98 is the ICD-10 code for Other sex chromosome abnormalities, male phenotype, not elsewhere classified. It is a three-character category divided into 10 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block Q90–Q99 (Chromosomal abnormalities, not elsewhere classified) in Chapter XVII, Congenital malformations, deformations and chromosomal abnormalities.
- Code type
- Category (3 characters)
- Chapter
- XVII · Q00–Q99
- Classification
- WHO ICD-10, 2019 version
Subcodes of Q98
- Q98.0Klinefelter syndrome karyotype 47,XXY
- Q98.1Klinefelter syndrome, male with more than two X chromosomes
- Q98.2Klinefelter syndrome, male with 46,XX karyotype
- 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 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DQ98Andre kønskromosomanomalier med mandlig fænotype IKA
Q98Muualla luokittamattomat sukukromosomipoikkevuudet yksilöllä, joka on ilmiasultaan mies
Q98Sonstige Anomalien der Gonosomen bei männlichem Phänotyp, anderenorts nicht klassifiziert
Q98Autres anomalies des chromosomes sexuels, phénotype masculin, non classées ailleurs
Q98overige geslachtschromosoomafwijkingen, mannelijk fenotype, niet
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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