ICD-10 Code A44.1 – Cutaneous and mucocutaneous bartonellosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A44.1 – Cutaneous and mucocutaneous bartonellosis
What it is
This code identifies bartonella infection affecting the skin or skin-plus-mucous membranes. Use it when the record specifies cutaneous or mucocutaneous bartonellosis rather than another Bartonella manifestation.
Clinical signs
Clinical features vary; refer to documentation. You may see skin lesions, papules, nodules, ulcers, or mucosal involvement, depending on the site and stage of infection.
When to use this code
Use A44.1 when the provider documents cutaneous or mucocutaneous bartonellosis as the diagnosis. It fits cases where Bartonella infection is limited to the skin or includes mucous membrane involvement. If the chart names a different bartonellosis form, code that condition instead.
Do not use for
Do not use this code for nonspecific skin infections, cat-scratch disease without cutaneous or mucocutaneous involvement, or other Bartonella conditions. Check documentation if the infection site or organism is unclear.
Coding tip
Code only when the provider clearly links Bartonella infection to cutaneous or mucocutaneous disease.