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Q90.9

Billable

Down syndrome, unspecified

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Down syndrome without specification of the genetic type; a chromosomal condition caused by an extra copy of chromosome 21 that results in intellectual disability and characteristic physical features.

Coding Tips

  • •Use this code only when the specific type of Down syndrome (nonmosaicism, mosaicism, or translocation) is not documented or unknown
  • •If the type is specified in the medical record, use the more specific Q90.0-Q90.2 codes instead

Code Hierarchy

└Q90Down syndrome└Q90.9Down syndrome, unspecified
└Q90.9Down syndrome, unspecified

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