Source Code Name Case count Share of cases (%)
OUTPAT OUTPAT_ICD10(Q998) Other specified chromosome abnormalities 60
OUTPAT OUTPAT_ICD10(Q950) Balanced translocation and insertion in normal individual 57
OUTPAT OUTPAT_ICD10(Q909) Down's syndrome, unspecified 54
INPAT INPAT_ICD10(Q909) Down's syndrome, unspecified 37
OUTPAT OUTPAT_ICD10(Q900) Trisomy 21, meiotic nondisjunction 36
INPAT INPAT_ICD10(Q900) Trisomy 21, meiotic nondisjunction 31
OUTPAT OUTPAT_ICD10(Q938) Other deletions from the autosomes 31
INPAT INPAT_ICD10(Q998) Other specified chromosome abnormalities 23
OUTPAT OUTPAT_ICD10(Q935) Other deletions of part of a chromosome 22
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q90) Down's syndrome. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 21
OUTPAT OUTPAT_ICD10(Q992) Fragile X chromosome 19
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q909) Down's syndrome, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 15
OUTPAT OUTPAT_ICD10(Q985) Karyotype 47,XYY 14
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q998) Other specified chromosome abnormalities. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 14
OUTPAT OUTPAT_ICD10(Q980) Klinefelter's syndrome karyotype 47,XXY 13
INPAT INPAT_ICD10(Q935) Other deletions of part of a chromosome 12
INPAT INPAT_ICD10(Q938) Other deletions from the autosomes 12
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q938) Other deletions from the autosomes. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 12
OUTPAT OUTPAT_ICD10(Q988) Other specified sex chromosome abnormalities, male phenotype 11
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q992) Fragile X chromosome. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 11
OUTPAT OUTPAT_ICD10(Q951) Chromosome inversion in normal individual 10
OUTPAT OUTPAT_ICD10(Q963) Mosaicism, 45,X/46,XX or XY 9
OUTPAT OUTPAT_ICD10(Q970) Karyotype 47,XXX 9
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q900) Trisomy 21, meiotic nondisjunction. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 9
OUTPAT OUTPAT_ICD10(Q910) Trisomy 18, meiotic nondisjunction 8
OUTPAT OUTPAT_ICD10(Q958) Other balanced rearrangements and structural markers 8
OUTPAT OUTPAT_ICD10(Q968) Other variants of Turner's syndrome 8
OUTPAT OUTPAT_ICD10(Q984) Klinefelter's syndrome, unspecified 8
DEATH DEATH_ICD10(Q909) Down's syndrome, unspecified 7
INPAT INPAT_ICD10(Q992) Fragile X chromosome 7
OUTPAT OUTPAT_ICD10(Q952) Balanced autosomal rearrangement in abnormal individual 7
OUTPAT OUTPAT_ICD10(Q999) Chromosomal abnormality, unspecified 7
INPAT INPAT_ICD10(Q950) Balanced translocation and insertion in normal individual 6
INPAT INPAT_ICD10(Q980) Klinefelter's syndrome karyotype 47,XXY 6
INPAT INPAT_ICD10(Q985) Karyotype 47,XYY 6
OUTPAT OUTPAT_ICD10(Q928) Other specified trisomies and partial trisomies of autosomes 6
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q935) Other deletions of part of a chromosome. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 6
PRIM_OUT PRIM_OUT_NOT_USED_ICD10(Q984) Klinefelter's syndrome, unspecified. Not used in endpoint definition. POSSIBLY INACCURATE IN COMPLEX ENDPOINTS! 6
INPAT INPAT_ICD10(Q970) Karyotype 47,XXX 5
OUTPAT OUTPAT_ICD10(Q901) Trisomy 21, mosaicism (mitotic nondisjunction) 5
OUTPAT OUTPAT_ICD10(Q923) Minor partial trisomy 5
OUTPAT OUTPAT_ICD10(Q930) Whole chromosome monosomy, meiotic nondisjunction 5
OUTPAT OUTPAT_ICD10(Q960) Karyotype 45,X 5
OUTPAT OUTPAT_ICD10(Q972) Mosaicism, lines with various numbers of X chromosomes 5
OUTPAT OUTPAT_ICD10(Q986) Male with structurally abnormal sex chromosome 5
OUTPAT OUTPAT_ICD10(Q991) 46,XX true hermaphrodite 5