Right fascicular block

This code signifies a conduction abnormality within the right bundle branch of the heart, specifically affecting one of its fascicles. It indicates a delay or blockage in the electrical impulse transmission to the right ventricle, which can be identified on an electrocardiogram (ECG).

Apply this code when documentation explicitly states "right fascicular block" or a more specific variant like "right anterior fascicular block" or "right posterior fascicular block." This diagnosis is typically made based on ECG findings interpreted by a cardiologist.

• Do not confuse with complete right bundle branch block (RBBB) or left fascicular blocks.
• Ensure the documentation specifies "right" fascicular block; otherwise, an unspecified fascicular block code may be more appropriate.
• Code any underlying cardiac conditions or symptoms separately, as this code describes an ECG finding, not necessarily a primary disease.