A20.8
BillableOther forms of plague
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is A20.8 an HCC code?
No. A20.8 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
A20.8 is the ICD-10-CM diagnosis code for other forms of plague. This code represents plague infections that don't fit into the more common forms like bubonic or pneumonic plague. Plague is a serious bacterial infection spread by fleas or rodents that requires immediate medical attention. A20.8 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).
A20.8 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.
Use this code only when the documentation specifies a form of plague that is not bubonic (A20.0), cellulose (A20.1), pneumonic (A20.2), or septicemic (A20.7).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for A20.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the documentation specifies a form of plague that is not bubonic (A20.0), cellulose (A20.1), pneumonic (A20.2), or septicemic (A20.7)
- •Always verify the specific type of plague documented by the physician before assigning this 'other forms' code, as more specific codes may be available