I43

Billable

Cardiomyopathy in diseases classified elsewhere

I43 is the ICD-10-CM code for Cardiomyopathy in diseases classified elsewhere. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
I00-I99
Edition
FY2026

I00-I99 Diseases of the circulatory system

What this means — in plain language

MedlinePlus · NIH

Cardiomyopathy 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.

Excludes1 — not coded here

  • cardiomyopathy (in):
  • coxsackie (virus) (B33.24)
  • diphtheria (A36.81)
  • sarcoidosis (D86.85)
  • tuberculosis (A18.84)

Code first

  • underlying disease, such as:
  • amyloidosis (E85.-)
  • glycogen storage disease (E74.0-)
  • gout (M10.0-)
  • thyrotoxicosis (E05.0-E05.9-)

Conditions mapped to this code

MedlinePlus · NIH

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code I43?
I43 is the ICD-10-CM code for "Cardiomyopathy in diseases classified elsewhere". It falls under I00-I99 Diseases of the circulatory system.
Is I43 a billable code?
Yes — I43 is a billable, specific ICD-10-CM code valid for reimbursement.
What is excluded from I43?
Excludes1 (not coded here): cardiomyopathy (in):; coxsackie (virus) (B33.24); diphtheria (A36.81); sarcoidosis (D86.85).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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