I42.00 ICD-10-CM Code: Dilated cardiomyopathy, unspecified
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Code Set: New for FY2027 — not valid before October 1, 2026. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for I42.00 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- myocardiopathy
Inclusion Terms
Alternative terms the tabular list files under this code.
- Congestive cardiomyopathy, NOS
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- ischemic cardiomyopathy (I25.5)
- peripartum cardiomyopathy (O90.3)
- ventricular hypertrophy (I51.7)
Code First
Underlying conditions that must be sequenced before this code.
- pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
Nearest Codes in This Family
Official ICD-10-CM classifications closest to I42.00 in its code family, with their registry titles.
- I42 — Cardiomyopathy
- I42.0 — Dilated cardiomyopathy
- I42.01 — Familial-genetic dilated cardiomyopathy
- I42.09 — Other 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
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Cardiomyopathy (familial) (idiopathic), congestive
- Cardiomyopathy (familial) (idiopathic), dilated