Q90-Q99
Non-Billable
ChapterQ00–Q99
Rankblock
Official Description
Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Metadata & Insights
- •2026 ICD-10-CM Edition - Effective October 1, 2025.
- •Non-billable category (requires more specific sub-code).
- •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).
Clinical Hierarchy
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q90-Q99Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Q90Down syndrome
Q91Trisomy 18 and Trisomy 13
Q92Other trisomies and partial trisomies of the autosomes, not elsewhere classified
Q93Monosomies and deletions from the autosomes, not elsewhere classified
Q95Balanced rearrangements and structural markers, not elsewhere classified
Q96Turner's syndrome
Q97Other sex chromosome abnormalities, female phenotype, not elsewhere classified
Q98Other sex chromosome abnormalities, male phenotype, not elsewhere classified
Q99Other chromosome abnormalities, not elsewhere classified
Applicable Ancestor Context
The following parent sections contain instructions or notes that apply to Q90-Q99:
chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructionsMS-DRG Classification
No direct MS-DRG triggers identified.
Cross Reference
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