ICD-10 Code B96.89 – Other specified bacterial agents as the cause of diseases classified elsewhere (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B96.89 – Other specified bacterial agents as the cause of diseases classified elsewhere
What it is
This code identifies a specific bacterial organism documented as the cause of another condition, when no more exact bacterial code applies. It is always used as an additional code, not as the primary diagnosis.
Clinical signs
Clinical features vary; refer to documentation. You should see a confirmed or clearly documented bacterial agent linked to the patient’s current disease, infection, or inflammatory process.
When to use this code
Use B96.89 when the record names a bacterial cause that is not listed in a more specific B96 category and the condition is classified elsewhere. Common examples include infections or complications where the provider documents the organism but the main diagnosis remains the underlying condition.
Assign it only after you verify that the bacterial agent is documented and that another code describes the actual disease site or manifestation. If the organism is not specified, check documentation.
Do not use for
Do not use this code as the principal diagnosis, and do not use it for viral, fungal, or parasitic causes. Avoid it when a more specific bacterial code is available.
Coding tip
Code the underlying condition first, then add B96.89 only when the documentation supports an unspecified bacterial cause.