Chromosomal abnormalities, not elsewhere classified - Q90-Q99

 Type 2 Excludes

• mitochondrial metabolic disorders (E88.4-)

 Codes

• Q90 - Down syndrome
• Q91 - Trisomy 18 and Trisomy 13
• Q92 - Other trisomies and partial trisomies of the autosomes, not elsewhere classified
• Q93 - Monosomies and deletions from the autosomes, not elsewhere classified
• Q95 - Balanced rearrangements and structural markers, not elsewhere classified
• Q96 - Turner's syndrome
• Q97 - Other sex chromosome abnormalities, female phenotype, not elsewhere classified
• Q98 - Other sex chromosome abnormalities, male phenotype, not elsewhere classified
• Q99 - Other chromosome abnormalities, not elsewhere classified