Try for free

Q98 ICD-10-CA category: Other sex chromosome abnormalities, male phenotype, not elsewhere classified

Q98 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.

Official description

Q98

Other sex chromosome abnormalities, male phenotype, not elsewhere classified

ICD-10-CA · Canada

Codes in Q98

Q98 isn’t a code on its own. Open the code that matches what the note documents.

Q98.0Klinefelter'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, unspecifiedQ98.5Karyotype 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

Notes for Q98

As CIHI prints them, with any note Q98 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 sits

  1. 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  2. 2Block Q90-Q99Chromosomal abnormalities, not elsewhere classified
  3. 3Category Q98Other sex chromosome abnormalities, male phenotype, not elsewhere classified

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.

See Q98 in the CIHI source

Frequently asked questions

Is Q98 a valid ICD-10-CA code?

No. Q98 (Other sex chromosome abnormalities, male phenotype, not elsewhere classified) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.

Where is Q98 in ICD-10-CA?

Q98 sits under Q90-Q99 Chromosomal abnormalities, not elsewhere classified, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).

What coding notes apply to Q98?

ICD-10-CA lists Excludes notes for Q98, 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

Q90Down's syndromeQ91Edwards' syndrome and Patau's syndromeQ92Other trisomies and partial trisomies of the autosomes, not elsewhere classifiedQ93Monosomies and deletions from the autosomes, not elsewhere classifiedQ95Balanced rearrangements and structural markers, not elsewhere classifiedQ96Turner's syndromeQ97Other sex chromosome abnormalities, female phenotype, not elsewhere classifiedQ99Other chromosome abnormalities, not elsewhere classified