RBBB ICD-10-CM Codes | 2025

When a patient is diagnosed with a right bundle branch block confirmed by an electrocardiogram (ECG), you should use an RBBB ICD-10-CM code. Accurate documentation should reflect whether the block is unspecified (I45.10) or fits the criteria for other specified types (I45.19).

Yes, both I45.10 (unspecified right bundle branch block) and I45.19 (other right bundle branch block) are valid and billable ICD-10-CM diagnosis codes. When supported by appropriate documentation, they are accepted by Medicare, Medicaid, and commercial insurers.

Treatment for RBBB typically involves addressing the underlying cardiac condition, such as ischemia, heart failure, or structural abnormalities. Isolated RBBB without symptoms usually requires no treatment, but monitoring and further evaluation may be necessary in complex cases.