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Q99.89

Billable

Other specified chromosome abnormalities

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

What This Code Means

Various rare chromosomal abnormalities that do not fit into other specific chromosome disorder categories.

Coding Tips

  • •This is a catch-all code; use only when a specific chromosome abnormality code is not available
  • •Provide detailed documentation of the specific chromosomal finding to support medical necessity and allow for future code specificity

Code Hierarchy

└Q99Other chromosome abnormalities, not elsewhere classified└Q99.8Other specified chromosome abnormalities└Q99.89Other specified chromosome abnormalities
└Q99.89Other specified chromosome abnormalities

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