ICD-10 Code A77.8 – Other spotted fevers (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A77.8 – Other spotted fevers
What it is
A77.8 identifies spotted fever group rickettsial infections that do not fit a more specific code. Use it for documented “other spotted fevers” when the record supports a spotted fever diagnosis but not a named subtype.
Clinical signs
Clinical features vary; refer to documentation. Typical spotted fever illness may include acute fever, headache, rash, and a history of tick exposure, but you should code only what is specifically documented.
When to use this code
Use A77.8 when the clinician documents an unspecified or other spotted fever infection and no more specific ICD-10 code is supported. It also fits cases where the chart identifies a spotted fever group rickettsiosis without naming the exact organism or syndrome. Check documentation if the provider records a different rickettsial illness.
Do not use for
Do not use this code for confirmed spotted fever types with their own ICD-10 category, or for nonspecific fever without a documented rickettsial diagnosis. If the note is unclear, check documentation.
Coding tip
Code the most specific rickettsial diagnosis documented, and use A77.8 only when the record supports “other spotted fevers” but not a more precise option.