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ICD-10-CM Codes Q00-Q99 Q90-Q99

Section Q90-Q99 Chromosomal abnormalities, not elsewhere classified Q90-Q99

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( Q80-Q89 )

Excludes-2 for Q90-Q99:

mitochondrial metabolic disorders (E88.4-)

Code List:

Q90

Code hierarchy

Q90 Down syndrome
- Q90.0 Trisomy 21, nonmosaicism (meiotic nondisjunction)
- Q90.1 Trisomy 21, mosaicism (mitotic nondisjunction)
- Q90.2 Trisomy 21, translocation
- Q90.9 Down syndrome, unspecified

Down syndrome

Q91

Code hierarchy

Q91 Trisomy 18 and Trisomy 13
- Q91.0 Trisomy 18, nonmosaicism (meiotic nondisjunction)
- Q91.1 Trisomy 18, mosaicism (mitotic nondisjunction)
- Q91.2 Trisomy 18, translocation
- Q91.3 Trisomy 18, unspecified
- Q91.4 Trisomy 13, nonmosaicism (meiotic nondisjunction)
- Q91.5 Trisomy 13, mosaicism (mitotic nondisjunction)
- Q91.6 Trisomy 13, translocation
- Q91.7 Trisomy 13, unspecified

Trisomy 18 and Trisomy 13

Q92

Code hierarchy

Q92 Other trisomies and partial trisomies of the autosomes, not elsewhere classified
- Q92.0 Whole chromosome trisomy, nonmosaicism (meiotic nondisjunction)
- Q92.1 Whole chromosome trisomy, mosaicism (mitotic nondisjunction)
- Q92.2 Partial trisomy
- Q92.5 Duplications with other complex rearrangements
- Q92.6 Marker chromosomes
  - Q92.61 Marker chromosomes in normal individual
  - Q92.62 Marker chromosomes in abnormal individual
- Q92.7 Triploidy and polyploidy
- Q92.8 Other specified trisomies and partial trisomies of autosomes
- Q92.9 Trisomy and partial trisomy of autosomes, unspecified

Other trisomies and partial trisomies of the autosomes, not elsewhere classified

Q93

Code hierarchy

Q93 Monosomies and deletions from the autosomes, not elsewhere classified
- Q93.0 Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction)
- Q93.1 Whole chromosome monosomy, mosaicism (mitotic nondisjunction)
- Q93.2 Chromosome replaced with ring, dicentric or isochromosome
- Q93.3 Deletion of short arm of chromosome 4
- Q93.4 Deletion of short arm of chromosome 5
- Q93.5 Other deletions of part of a chromosome
  - Q93.51 Angelman syndrome
  - Q93.52 Phelan-McDermid syndrome
  - Q93.59 Other deletions of part of a chromosome
- Q93.7 Deletions with other complex rearrangements
- Q93.8 Other deletions from the autosomes
  - Q93.81 Velo-cardio-facial syndrome
  - Q93.82 Williams syndrome
  - Q93.88 Other microdeletions
  - Q93.89 Other deletions from the autosomes
- Q93.9 Deletion from autosomes, unspecified

Monosomies and deletions from the autosomes, not elsewhere classified

Q95

Code hierarchy

Q95 Balanced rearrangements and structural markers, not elsewhere classified
- Q95.0 Balanced translocation and insertion in normal individual
- Q95.1 Chromosome inversion in normal individual
- Q95.2 Balanced autosomal rearrangement in abnormal individual
- Q95.3 Balanced sex/autosomal rearrangement in abnormal individual
- Q95.5 Individual with autosomal fragile site
- Q95.8 Other balanced rearrangements and structural markers
- Q95.9 Balanced rearrangement and structural marker, unspecified

Balanced rearrangements and structural markers, not elsewhere classified

Q96

Code hierarchy

Q96 Turner's syndrome
- Q96.0 Karyotype 45, X
- Q96.1 Karyotype 46, X iso (Xq)
- Q96.2 Karyotype 46, X with abnormal sex chromosome, except iso (Xq)
- Q96.3 Mosaicism, 45, X/46, XX or XY
- Q96.4 Mosaicism, 45, X/other cell line(s) with abnormal sex chromosome
- Q96.8 Other variants of Turner's syndrome
- Q96.9 Turner's syndrome, unspecified

Turner's syndrome

Q97

Code hierarchy

Q97 Other sex chromosome abnormalities, female phenotype, not elsewhere classified
- Q97.0 Karyotype 47, XXX
- Q97.1 Female with more than three X chromosomes
- Q97.2 Mosaicism, lines with various numbers of X chromosomes
- Q97.3 Female with 46, XY karyotype
- Q97.8 Other specified sex chromosome abnormalities, female phenotype
- Q97.9 Sex chromosome abnormality, female phenotype, unspecified

Other sex chromosome abnormalities, female phenotype, not elsewhere classified

Q98

Code hierarchy

Q98 Other sex chromosome abnormalities, male phenotype, not elsewhere classified
- Q98.0 Klinefelter syndrome karyotype 47, XXY
- Q98.1 Klinefelter syndrome, male with more than two X chromosomes
- Q98.3 Other male with 46, XX karyotype
- Q98.4 Klinefelter syndrome, unspecified
- Q98.5 Karyotype 47, XYY
- Q98.6 Male with structurally abnormal sex chromosome
- Q98.7 Male with sex chromosome mosaicism
- Q98.8 Other specified sex chromosome abnormalities, male phenotype
- Q98.9 Sex chromosome abnormality, male phenotype, unspecified

Other sex chromosome abnormalities, male phenotype, not elsewhere classified

Q99

Code hierarchy

Q99 Other chromosome abnormalities, not elsewhere classified
- Q99.0 Chimera 46, XX/46, XY
- Q99.1 46, XX true hermaphrodite
- Q99.2 Fragile X chromosome
- Q99.8 Other specified chromosome abnormalities
- Q99.9 Chromosomal abnormality, unspecified

Other chromosome abnormalities, not elsewhere classified