ICD-10 Code A44.8 – Other forms of bartonellosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A44.8 – Other forms of bartonellosis
What it is
A44.8 identifies bartonellosis infections that do not fit a more specific ICD-10-CM category. Use it for documented Bartonella-related disease when the record names another form of bartonellosis.
Clinical signs
Clinical features vary; refer to documentation. Bartonellosis may present with systemic infection, lymph node involvement, or other organ-specific findings depending on the Bartonella species and site of disease.
When to use this code
Use A44.8 when the provider documents bartonellosis but does not specify cat-scratch disease, trench fever, or another indexed subtype. It also fits cases described as an unspecified “other” Bartonella infection. Check the note for organism confirmation and site details.
Do not use for
Do not use this code if the record supports a more specific bartonellosis code, such as cat-scratch disease or trench fever. Do not assign it for suspected infection without documentation. Check documentation.
Coding tip
Look for the exact organism and disease wording in the assessment; if a specific Bartonella syndrome is named, code that diagnosis instead of A44.8.