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I44 Atrioventricular and left bundle-branch block

ICD-10-CM category I44 sits in Chapter 9 (Diseases of the circulatory system, I00-I99). It contains 10 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

I44.3 Other and unspecified atrioventricular blockI44.6 Other and unspecified fascicular block

Billable codes in I44

CodeDescription
I44.0Atrioventricular block, first degree
I44.1Atrioventricular block, second degree
I44.2Atrioventricular block, complete
I44.30Unspecified atrioventricular block
I44.39Other atrioventricular block
I44.4Left anterior fascicular block
I44.5Left posterior fascicular block
I44.60Unspecified fascicular block
I44.69Other fascicular block
I44.7Left bundle-branch block, unspecified

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