 
| ICD-10-CM-2023 > I00-I99 > I30-I5A > I42 | 
| I30-I5A | Other forms of heart disease | |
| I42 | Cardiomyopathy | |
| Incl.: | myocardiopathy | |
| Code first | pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4) | |
| Excl2.: | ischemic cardiomyopathy (I25.5) peripartum cardiomyopathy (O90.3) ventricular hypertrophy (I51.7) | |
| I42.0 | Dilated cardiomyopathy | |
| Info: | Congestive cardiomyopathy | |
| I42.1 | Obstructive hypertrophic cardiomyopathy | |
| Info: | Hypertrophic subaortic stenosis (idiopathic) | |
| I42.2 | Other hypertrophic cardiomyopathy | |
| Info: | Nonobstructive hypertrophic cardiomyopathy | |
| I42.3 | Endomyocardial (eosinophilic) disease | |
| Info: | Endomyocardial (tropical) fibrosis Löffler's endocarditis | |
| I42.4 | Endocardial fibroelastosis | |
| Info: | Congenital cardiomyopathy Elastomyofibrosis | |
| I42.5 | Other restrictive cardiomyopathy | |
| Info: | Constrictive cardiomyopathy NOS | |
| I42.6 | Alcoholic cardiomyopathy | |
| Use add'l | presence of alcoholism (F10.-) | |
| I42.7 | Cardiomyopathy due to drug and external agent | |
| Code first | poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4 or 6) | |
| Use add'l | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) | |
| I42.8 | Other cardiomyopathies | |
| I42.9 | Cardiomyopathy, unspecified | |
| Info: | Cardiomyopathy (primary) (secondary) NOS | |
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