ICD-10 Code A23.1 – Brucellosis due to Brucella abortus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A23.1 – Brucellosis due to Brucella abortus
What it is
A23.1 identifies brucellosis caused by Brucella abortus, a bacterial infection usually linked to cattle exposure or unpasteurized dairy. Use it when the documentation specifies this organism.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include fever, sweats, fatigue, malaise, and joint or back pain, but the record should support the diagnosis and organism.
When to use this code
Use A23.1 when the provider documents brucellosis due to Brucella abortus, or when the organism is confirmed in the chart. This code fits acute or chronic infection if the species is named. If the record only says brucellosis without the species, check documentation.
Do not use for
Do not use this code for brucellosis caused by another Brucella species, or for suspected exposure without confirmed infection. If the organism is not specified, check documentation.
Coding tip
Match the code to the documented Brucella species, not just the generic diagnosis.