ICD-10 Code A01.09 – Typhoid fever with other complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A01.09 – Typhoid fever with other complications
What it is
A01.09 identifies typhoid fever caused by Salmonella Typhi when the record documents complications not named in a more specific ICD-10 code. Use it for typhoid with additional, documented clinical problems.
Clinical signs
Clinical features vary; refer to documentation. Typhoid fever commonly presents with persistent fever, abdominal symptoms, headache, and systemic illness, and the chart should describe the specific complication present.
When to use this code
Use A01.09 when the provider documents typhoid fever plus another complication that is not separately classified elsewhere. This code fits cases where the complication is clearly linked to typhoid, but the record does not support a more specific typhoid subtype.
If the note only says “typhoid fever” without complications, choose a different code. You should also verify whether the complication itself needs an additional code, depending on documentation and coding rules.
Do not use for
Do not use this code for uncomplicated typhoid fever or for paratyphoid infections. Check documentation if the record names a specific complication that has its own ICD-10 option.
Coding tip
Code the typhoid diagnosis only when the provider links the complication to typhoid in the record.