I42 ICD-10-CM Code: Cardiomyopathy
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
I42Cardiomyopathy
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where I42 sits
- 1
Chapter 9
Diseases of the circulatory system (I00-I99)
- 2
Section
Other forms of heart disease (I30-I5A)
- 3
Category I42
Cardiomyopathy
- 4
Code I42
Cardiomyopathy
More specific choices
Codes under I42
I42 is a non-billable category. Choose the child code that best matches the documented diagnosis.
I42.0Dilated 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
I42.8Other cardiomyopathies
I42.9Cardiomyopathy, unspecified
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for I42.
Code first
- pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
Use additional code
No “use additional code” instruction is listed for I42.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for I42.
Excludes2
Conditions not included here that may be reported separately when present.
- ischemic cardiomyopathy (I25.5)
- peripartum cardiomyopathy (O90.3)
- ventricular hypertrophy (I51.7)
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code I42 mean?
I42 is the FY 2027 U.S. ICD-10-CM code for “Cardiomyopathy.”
Is I42 a billable or specific ICD-10-CM code?
No. I42 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is I42 located in ICD-10-CM?
I42 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Other forms of heart disease (I30-I5A) (I30–I5A), under category I42, Cardiomyopathy.
What coding notes are listed for I42?
No inclusion terms are listed for I42 in this reference record. Code-first instructions: pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4). No Excludes1 note is listed. Excludes2 notes: ischemic cardiomyopathy (I25.5); peripartum cardiomyopathy (O90.3); ventricular hypertrophy (I51.7).
Ready to transform your clinical documentation?
Join Vero and see how effortless documentation can be.
No credit card required
Cancel anytime