ICD-10 Code I45.19 – Other right bundle-branch block (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I45.19 – Other right bundle-branch block
What it is
I45.19 identifies a right bundle-branch block pattern that does not fit a more specific category. It means electrical conduction through the right bundle branch is delayed or interrupted.
Clinical signs
Clinical features vary; refer to documentation. It is often found on ECG, with a widened QRS pattern consistent with right bundle-branch block and no better specified subtype.
When to use this code
Use this code when the provider documents other right bundle-branch block or a nonspecific right bundle-branch block variant. It is appropriate when the record supports RBBB but does not describe a more specific diagnosis. Check documentation if the ECG interpretation is unclear.
Do not use for
Do not use it for complete left bundle-branch block or unspecified conduction defects. If the chart names a different bundle-branch disorder, code that documented condition instead.
Coding tip
Code from the provider’s final ECG interpretation, not the machine readout alone.