I42.8Header code — not billableNew this fiscal year
Other cardiomyopathies
- Chapter
- 9. Diseases of the circulatory system
- Category
- I42
- Effective date
- October 1, 2026
Related codes in category I42
I42CardiomyopathyI42.0Dilated cardiomyopathyI42.00Dilated cardiomyopathy, unspecifiedYesI42.01Familial-genetic dilated cardiomyopathyYesI42.09Other dilated cardiomyopathyYesI42.1Obstructive hypertrophic cardiomyopathyYesI42.2Other hypertrophic cardiomyopathyYesI42.3Endomyocardial (eosinophilic) diseaseYesI42.4Endocardial fibroelastosisYesI42.5Other restrictive cardiomyopathyYesI42.6Alcoholic cardiomyopathyYesI42.7Cardiomyopathy due to drug and external agentYes
Frequently asked questions
What is ICD-10 code I42.8?
I42.8 is an ICD-10-CM diagnosis code for Other cardiomyopathies.
Is I42.8 a billable code?
No. I42.8 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is I42.8 in?
I42.8 falls under Chapter 9: Diseases of the circulatory system.
When did I42.8 become effective?
I42.8 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to I42.8?
I42.8 belongs to category I42, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.