ICD-10 Code I25.5 – Ischemic cardiomyopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.5 – Ischemic cardiomyopathy
What it is
Ischemic cardiomyopathy is weakened heart muscle caused by reduced blood flow from coronary artery disease. Use this code when documentation shows chronic myocardial damage or left ventricular dysfunction due to ischemia.
Clinical signs
Patients may have heart failure symptoms, reduced exercise tolerance, dyspnea, or angina history. Imaging or cardiac testing often shows impaired ventricular function; clinical features vary, refer to documentation.
When to use this code
Use I25.5 when the provider documents ischemic cardiomyopathy, cardiomyopathy due to coronary artery disease, or chronic ischemic myocardial dysfunction. Code it from the assessment when the condition is established and not just suspected.
Do not assume it from prior infarction alone unless the record links the heart muscle disease to ischemia. Check documentation for the causal relationship and any concurrent coronary disease diagnoses.
Do not use for
Do not use this code for acute myocardial infarction, nonspecific cardiomyopathy, or heart failure without documented ischemic cause. Check documentation if the record does not clearly state ischemic cardiomyopathy.
Coding tip
Look for explicit provider wording tying cardiomyopathy to ischemic or coronary artery disease before assigning I25.5.