I48.9Non-billable (header)
Unspecified atrial fibrillation and atrial flutter
Code Hierarchy
┌9Diseases of the circulatory system (I00-I99)├I30-I5AOther forms of heart disease (I30-I5A)├I48Atrial fibrillation and flutter
└I48.9Unspecified atrial fibrillation and atrial flutter
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