All ICD10 Codes
Chapter 17

Q00–Q99: Congenital Malformations, Deformations and Chromosomal Abnormalities

Congenital Malformations, Deformations and Chromosomal Abnormalities diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)
All CodesBillable Only
Internal Codes
PrevNext
  • Q92.7—

    Triploidy and polyploidy

  • Q92.8—

    Other specified trisomies and partial trisomies of autosomes

  • Q92.9—

    Trisomy and partial trisomy of autosomes, unspecified

  • 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

  • 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

  • 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

  • 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

  • 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

PreviousPage 21 of 22Next