Q98.5 ICD-10-CA code: Karyotype 47,XYY
Q98.5 is the ICD-10-CA code for “Karyotype 47,XYY” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Q98.5Karyotype 47,XYY
Short description: Karyotype 47 XYY
ICD-10-CA · Canada · Also written Q985
Index terms
Entries in CIHI’s alphabetical index that lead to Q98.5. Searching the index by the condition the note names is how coders reach this code.
- Karyotype, 47,XYY
Notes for Q98.5
As CIHI prints them, with any note Q98.5 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q98.5 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q90-Q99Chromosomal abnormalities, not elsewhere classified
- 3Category Q98Other sex chromosome abnormalities, male phenotype, not elsewhere classified
- 4Valid code Q98.5Karyotype 47,XYY
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code Q98.5 mean?
Q98.5 is the ICD-10-CA code for “Karyotype 47,XYY” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Q98.5 in ICD-10-CA?
Q98.5 sits under Q98 Other sex chromosome abnormalities, male phenotype, not elsewhere classified, within Q90-Q99 Chromosomal abnormalities, not elsewhere classified, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
What coding notes apply to Q98.5?
ICD-10-CA lists Excludes notes for Q98.5, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside Q98.5
View Q98Q98.0Klinefelter's syndrome karyotype 47,XXYQ98.1Klinefelter's syndrome, male with more than two X chromosomesQ98.2Klinefelter's syndrome, male with 46,XX karyotypeQ98.3Other male with 46,XX karyotypeQ98.4Klinefelter's syndrome, unspecifiedQ98.6Male with structurally abnormal sex chromosomeQ98.7Male with sex chromosome mosaicismQ98.8Other specified sex chromosome abnormalities, male phenotypeQ98.9Sex chromosome abnormality, male phenotype, unspecified