ICD-10 Code I44.69 – Other fascicular block (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I44.69 – Other fascicular block
What it is
I44.69 identifies a conduction disturbance in one of the heart’s fascicles that does not fit a more specific fascicular block category. Use it when the record documents an “other” fascicular block.
Clinical signs
Clinical features vary; refer to documentation. Diagnosis is usually based on electrocardiographic findings showing fascicular conduction delay or block, sometimes with axis deviation or related conduction abnormalities.
When to use this code
Use this code when the provider documents a fascicular block and specifies that it is other or not otherwise classified. It may appear in cardiology notes, ECG interpretations, or problem lists. If the record names a more specific conduction defect, code that term instead.
Do not use for
Do not use this code for bundle branch block, atrioventricular block, or a more specific fascicular block when documented. Check documentation if the ECG interpretation is nonspecific.
Coding tip
Code the exact conduction disorder named by the clinician, and verify whether the note says “other,” “unspecified,” or a more specific fascicular block.