Other sex chromosome abnormalities, male phenotype, not elsewhere classified
In Chromosomal abnormalities, not elsewhere classified (Q90-Q99), chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities
9 billable codes under Q98: none are a CC or MCC; none map to an HCC.
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Instructional notes
Also applies, from Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
These notes sit on Q90-Q99 and apply to every code under it, including Q98.
Excludes2: not included here, code separately if applicable
- mitochondrial metabolic disorders (E88.4-)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Assign Q00-QA1 codes for documented congenital anomalies or genetic disorders at any age, coding non-inherent manifestations separately and sequencing Z38 first on the birth admission.
All codes under Q98
Q98 can't be used on a claim. Pick a billable code below; grey headings group them.
- 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 MS-DRGs
As the principal diagnosis, the billable codes under Q98 group to MS-DRG 729, 730, 742, 743, 760, or 761 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 729 Other Male Reproductive System Diagnoses with CC/MCC (9 of 9 codes)
- DRG 730 Other Male Reproductive System Diagnoses without CC/MCC (9 of 9 codes)
- DRG 742 Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC (1 of 9 codes)
- DRG 743 Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC (1 of 9 codes)
- DRG 760 Menstrual and Other Female Reproductive System Disorders with CC/MCC (1 of 9 codes)
- DRG 761 Menstrual and Other Female Reproductive System Disorders without CC/MCC (1 of 9 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Genetic Disorders
Genetic disorders are health conditions caused by changes (also called mutations or variants) in your genes. Genes are parts of DNA found in your cells that carry instructions for how your body grows, develops, and functions. Many genes tell your body how to make proteins, which are needed for your body to work properly.
Read more about genetic disorders on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.