A21.8 ICD-10-CM Code: Other forms of tularemia

A21.8 is the ICD-10-CM diagnosis code for other forms of tularemia. This code represents less common types of tularemia, a serious infectious disease caused by the bacterium Francisella tularensis that is typically transmitted through contact with infected animals or insect bites. It is used when the specific form of tularemia does not fit into the more common categories like pneumonic, ulceroglandular, or typhoidal tularemia. A21.8 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).

A21.8 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 tularemia that is not pneumonic (A21.0), ulceroglandular (A21.1), glandular (A21.2), oculoglandular (A21.3), or typhoidal (A21.7).