I42
Non-billableCardiomyopathy
I42 is the ICD-10-CM code for Cardiomyopathy. It is a non-billable category code — use a more specific child code such as I42.0 for billing.
- Status
- Header (non-billable)
- Chapter
- I00-I99
- Subcodes
- 10
- Edition
- FY2026
I00-I99 Diseases of the circulatory system
What this means — in plain language
MedlinePlus · NIHCardiomyopathy is the name for diseases of the heart muscle. These diseases enlarge your heart muscle or make it thicker and more rigid than normal. In rare cases, scar tissue replaces the muscle tissue. Some people live long, healthy lives with cardiomyopathy. Some people don't even realize they have it. In others, however, it can make the heart less able to pump blood through the body. This can cause serious…
Read more about Cardiomyopathy at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •myocardiopathy
Excludes2 — not included here
Code first
- •pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
Medications indicated for this condition
FDA labeling- Ivabradine›
- Ethanol›
- Tafamidis›
- Acoramidis›
- Dexrazoxane›
- Dexrazoxane for Injection›
- MavacamtenCardiac Myosin Inhibitor [EPC]›
- Vutrisiran›
Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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