North Asian tick fever

This code identifies a rickettsial infection, specifically a form of tick-borne typhus endemic to North Asia. It is caused by Rickettsia sibirica and typically presents with fever, headache, rash, and a characteristic eschar at the site of the tick bite.

Assign this code for documented cases of North Asian tick fever. Supporting documentation should include a physician's diagnosis, evidence of tick exposure, and clinical findings consistent with the disease, such as fever, rash, and eschar.

• Differentiate from other rickettsial infections; ensure the documentation specifies "North Asian tick fever" or Rickettsia sibirica.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter.
• Do not confuse with other forms of spotted fever group rickettsioses without specific documentation.