Q96.0
BillableKaryotype 45, X
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is Q96.0 an HCC code?
No. Q96.0 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Q96.0 is the ICD-10-CM diagnosis code for karyotype 45, x. Turner syndrome, a genetic condition where a person has only one X chromosome instead of the typical two sex chromosomes, causing short stature and other physical features. Q96.0 sits in the ICD-10-CM chapter for congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (q00-qa0), within the section covering chromosomal abnormalities, not elsewhere classified (q90-q99).
Q96.0 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.
Document associated clinical features such as short stature, gonadal dysgenesis, or cardiac abnormalities.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Q96.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.