Is I42 a billable code?
No. I42 is a header code that groups 13 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
I42: Cardiomyopathy
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
I42 groups related diagnoses under cardiomyopathy. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under I42
- I42.00Dilated cardiomyopathy, unspecified
- I42.01Familial-genetic dilated cardiomyopathy
- I42.09Other dilated cardiomyopathy
- I42.1Obstructive hypertrophic cardiomyopathy
- I42.2Other hypertrophic cardiomyopathy
- I42.3Endomyocardial (eosinophilic) disease
- I42.4Endocardial fibroelastosis
- I42.5Other restrictive cardiomyopathy
- I42.6Alcoholic cardiomyopathy
- I42.7Cardiomyopathy due to drug and external agent
- I42.81Arrhythmogenic cardiomyopathy
- I42.89Other cardiomyopathies not elsewhere classified
- I42.9Cardiomyopathy, unspecified
I42 questions
What does I42 mean?
I42 is the ICD-10-CM code for Cardiomyopathy. It is in chapter 9, Diseases of the circulatory system (I00-I99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.