Other cardiomyopathies

This code represents a group of myocardial diseases that do not fit into the more specific categories of dilated, hypertrophic, restrictive, or arrhythmogenic right ventricular cardiomyopathies. These are primary diseases of the heart muscle, often leading to impaired cardiac function, but their specific etiology or morphology is atypical or rare. Examples include noncompaction cardiomyopathy or eosinophilic cardiomyopathy.

Use this code when documentation clearly indicates a cardiomyopathy that does not meet the criteria for other specified types (e.g., I42.0-I42.7). This code is appropriate for conditions like left ventricular noncompaction (LVNC) or stress-induced cardiomyopathy (Takotsubo cardiomyopathy) when a more specific code is unavailable. Ensure the physician's notes explicitly state "other cardiomyopathy" or a specific type falling under this residual category.

• Always review documentation for a more specific cardiomyopathy type before assigning this code.
• Do not use this code for secondary cardiomyopathies (e.g., alcoholic, drug-induced) unless the specific type is explicitly stated as "other."
• Query the provider if the documentation is vague regarding the specific type of cardiomyopathy to ensure the most accurate code assignment.