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Q97.2

Q97.2: Mosaicism, lines with various numbers of X chromosomes

Billable / specific codeICD-10-CMPOA exempt

Q97.2 is a billable, specific ICD-10-CM code for mosaicism, lines with various numbers of x chromosomes. It is valid for submission on a claim.

Check Q97.2 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above Q97.2

A category’s note binds every code beneath it.

Written on Q97: Other sex chromosome abnormalities, female phenotype, not elsewhere classified

  • Turner's syndrome (Q96.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Mosaicism, mosaic›sex chromosome›lines with various numbers of X chromosomes
  • Sex›chromosome mosaics›lines with various numbers of X chromosomes

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Q97

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.