2010 ICD-9-CM Diagnosis Code 426.4
Right bundle branch block
- An impairment of transmission of the cardiac electrical impulse along the fibers of the right bundle branch. A " complete RBBB pattern" (with QRS duration > 0.11s) does not necessarily reflect the existence of a total conduction block in the right branch. This pattern only indicates that the entire or major parts of both ventricles are activated by the impulse emerging from the left branch. Thus, a significant degree of conduction delay ("high-grade" or "incomplete RBBB") can produce a similar pattern.
- An impairment of transmission of the cardiac electrical impulse along the fibers of the right bundle branch. A "complete RBBB pattern" (with QRS duration > 0.11s) does not necessarily reflect the existence of a total conduction block in the right branch. This pattern only indicates that the entire or major parts of both ventricles are activated by the impulse emerging from the left branch. Thus, a significant degree of conduction delay ("high-grade" or "incomplete RBBB") can produce a similar pattern. (NCI)
- Short description: Rt bundle branch block.
- ICD-9-CM 426.4 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
- You are viewing the 2010 version of ICD-9-CM 426.4.
- More recent version(s) of ICD-9-CM 426.4: 2011 2012 2013.
426.4 Alternative Terminology
Convert 426.4 to ICD-10-CM 
ICD-9-CM Volume 2 Index entries containing back-references to 426.4:
bundle branch (complete) (false) (incomplete) 
with
