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Q96.3

Billable

Mosaicism, 45, X/46, XX or XY

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

What This Code Means

A condition where some cells have the typical Turner's syndrome pattern (45, X) while other cells have normal chromosomes (46, XX or 46, XY), creating a mosaic pattern.

Coding Tips

  • Mosaicism indicates mixed cell populations; ensure genetic testing results clearly document the percentage of each cell line
  • This milder form may have less severe Turner's syndrome features than non-mosaic forms

Code Hierarchy

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