I25.5 vs I42
I25.5 (Ischemic cardiomyopathy) compared with I42 (Cardiomyopathy), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. I42 carries an Excludes2 note covering I25.5: “ischemic cardiomyopathy (I25.5)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| I25.5Ischemic cardiomyopathy | I42Cardiomyopathy | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Ischemic cardiomyopathy is a billable ICD-10-CM diagnosis code (I25.5). | Cardiomyopathy is a non-billable ICD-10-CM category code (I42). |
| Includes | — | myocardiopathy |
| Use additional code | code to identify: chronic total occlusion of coronary artery (I25.82) exposure to environmental tobacco smoke (Z77.22) | — |
| Code first | — | pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources