A23.2
BillableBrucellosis due to Brucella suis
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is A23.2 an HCC code?
No. A23.2 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
A23.2 is the ICD-10-CM diagnosis code for brucellosis due to brucella suis. This is a bacterial infection caused by Brucella suis, a pathogen typically transmitted from infected pigs or pork products to humans. The infection can cause fever, fatigue, and joint pain that may persist for weeks or months. A23.2 sits in the ICD-10-CM chapter for certain infectious and parasitic diseases (a00-b99), within the section covering certain zoonotic bacterial diseases (a20-a28).
A23.2 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.
Verify the specific Brucella species (suis) is documented in the medical record before assigning this code, as different species have different transmission routes and epidemiological significance.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A23.2 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify the specific Brucella species (suis) is documented in the medical record before assigning this code, as different species have different transmission routes and epidemiological significance
- •Consider adding a code for the exposure source (occupational contact with pigs/pork, consumption of contaminated food) if documented, as this helps with public health tracking and prevention efforts