[Q90] Down's syndrome
[Q91] Edwards' syndrome and Patau's syndrome
[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