10ICD Code Hub

A21

Header — not billable

Tularemia

The ICD-10 code for tularemia is A21.

A21 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 7 more specific codes below.

Clinical notes

Includes

Terms listed here further define or give examples of the conditions grouped under this code — they describe what the code covers, not a separate diagnosis.

  • deer-fly fever
  • infection due to Francisella tularensis
  • rabbit fever

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

Child codes under A21

Related codes in this category