ICD-10 Code A75 – Typhus fever (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A75 – Typhus fever
What it is
A75 identifies typhus fever, a group of infectious illnesses caused by rickettsial organisms. Use it when the record documents typhus fever without a more specific subtype.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include acute fever, headache, rash, and exposure history consistent with rickettsial infection.
When to use this code
Use A75 when the provider documents typhus fever and does not specify a more detailed ICD-10 option. It may also fit cases where the chart confirms typhus but lacks organism or type detail. If the record names a specific typhus subtype, code that more specific diagnosis instead.
Do not use for
Do not use A75 for other rickettsial diseases, nonspecific febrile illness, or suspected infection without confirmation. Check documentation if the term “typhoid” appears, as that is a different condition.
Coding tip
Confirm the exact wording in the assessment and problem list; typhus, typhoid, and other rickettsial infections are not interchangeable.