Q96.2 ICD-10-CM Code: Karyotype 46, X with abnormal sex chromosome, except iso (Xq)

Q96.2 is the ICD-10-CM diagnosis code for karyotype 46, x with abnormal sex chromosome, except iso (xq). A chromosomal condition where a person has 46 chromosomes with an abnormal sex chromosome that is not an isochromosome, causing Turner's syndrome features. Q96.2 sits in the ICD-10-CM chapter for congenital malformations, deformations and chromosomal abnormalities (q00-qa0), within the section covering chromosomal abnormalities, not elsewhere classified (q90-q99).

Q96.2 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

This code excludes isochromosome Xq (Q96.1); verify the specific chromosomal abnormality from genetic testing.