I42.7
BillableCardiomyopathy due to drug and external agent
HCC Category Mapping
V24HCC 85 — Congestive Heart Failure
0.368ESRDHCC 85 — Congestive Heart Failure
0.000RxHCCHCC 186 — Heart Failure
0.000What This Code Means
Heart muscle damage caused by medications, drugs, or exposure to external harmful substances that weaken the heart's pumping function.
Coding Tips
- •Always document the specific drug or external agent responsible (e.g., chemotherapy, alcohol, cocaine) in the medical record for complete coding
- •Link this diagnosis to the causative agent code when applicable to show the relationship between exposure and heart damage
Clinical Significance
Cardiomyopathy due to drugs or external agents captures heart muscle damage from medications, chemicals, or toxins. Common causes include chemotherapy (anthracyclines), cocaine, and radiation therapy. This is clinically important for identifying iatrogenic cardiac injury and guiding treatment modifications to prevent further damage.
Documentation Requirements
- ✓Provider diagnosis of cardiomyopathy with documented causal relationship to a specific agent
- ✓Identification of the specific drug or external agent responsible
- ✓Echocardiographic evidence of cardiac dysfunction
- ✓Timeline correlating exposure to cardiac changes
- ✓Documentation of adverse effect or poisoning code for the causative agent
Use Additional Code
Commonly Confused Codes
I42.6 — Alcoholic cardiomyopathy; specifically alcohol-induced, has its own codeI42.0 — Dilated cardiomyopathy; use when no external cause is identifiedT45.1X5A — Adverse effect of antineoplastic and immunosuppressive drugs; code the adverse effect separatelyI42.8 — Other cardiomyopathies; use when the type does not fit drug-induced
Code Hierarchy
└I42Cardiomyopathy└I42.7Cardiomyopathy due to drug and external agent
└I42.7Cardiomyopathy due to drug and external agent