AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2026 Quarter 4; New/Revised ICD-10-CM Codes
Dilated Cardiomyopathy
Codes I42.0 , Dilated cardiomyopathy, and I42.8 , Other cardiomyopathies, have been expanded, and new codes have been created to identify distinct types of cardiomyopathies as follows: I42.00 Dilated cardiomyopathy, unspecified I42.01 Familial-genetic dilated cardiomyopathy I42.09 Other dilated cardiomyopathy I42.81 Arrhythmogenic cardiomyopathy I42.89 Other cardiomyopathies not elsewhere classified Dilated cardiomyopathy (DCM) is characterized by a diseased heart muscle that causes the heart chambers to thin and stretch, resulting in enlarged heart chambers, making it difficult for the heart to pump blood effectively. This can lead to arrhythmias and heart failure. DCM is the most...
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