Q90

Down syndrome

Non-billable header

Q90 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes

  • Note: Codes from this chapter are not for use on maternal records

Excludes2

Not included here — may be reported together when both conditions exist.

  • inborn errors of metabolism (E70-E88)
  • mitochondrial metabolic disorders (E88.4-)

Use additional code

Add a code to identify the following, if applicable.

  • code(s) to identify any associated degree of intellectual disabilities (F70-F79)

Code also

An additional code may be needed.

  • associated physical condition(s), such as atrioventricular septal defect (Q21.2-)

More specific codes Q90

  • Q90.0Trisomy 21, nonmosaicism (meiotic nondisjunction)Billable
  • Q90.1Trisomy 21, mosaicism (mitotic nondisjunction)Billable
  • Q90.2Trisomy 21, translocationBillable
  • Q90.9Down syndrome, unspecifiedBillable

Related codes

  • Q91Trisomy 18 and Trisomy 13Header
  • Q92Other trisomies and partial trisomies of the autosomes, not elsewhere classifiedHeader
  • Q93Monosomies and deletions from the autosomes, not elsewhere classifiedHeader
  • Q95Balanced rearrangements and structural markers, not elsewhere classifiedHeader
  • Q96Turner's syndromeHeader
  • Q97Other sex chromosome abnormalities, female phenotype, not elsewhere classifiedHeader
  • Q98Other sex chromosome abnormalities, male phenotype, not elsewhere classifiedHeader
  • Q99Other chromosome abnormalities, not elsewhere classifiedHeader

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