I42 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Cardiomyopathy.
Includes
Myocardiopathy
Code first
Pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
Type 2 excludes
Codes
I42.0
Dilated cardiomyopathy
I42.1
Obstructive hypertrophic cardiomyopathy
I42.2
Other hypertrophic cardiomyopathy
I42.3
Endomyocardial (eosinophilic) disease
I42.4
Endocardial fibroelastosis
I42.5
Other restrictive cardiomyopathy
I42.6
Alcoholic cardiomyopathy
I42.7
Cardiomyopathy due to drug and external agent
I42.8
Other cardiomyopathies
I42.9
Cardiomyopathy, unspecified
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
Code changed
Type 1 excludes
ischemic cardiomyopathy (I25.5)peripartum cardiomyopathy (O90.3)
Type 2 excludes
ventricular hypertrophy (I51.7)
- ischemic cardiomyopathy (I25.5)
- peripartum cardiomyopathy (O90.3)
- ventricular hypertrophy (I51.7)
2016
New code