I40.1

Applicable To

• Fiedler’s myocarditis

• Giant cell myocarditis

• Idiopathic myocarditis

Approximate Synonyms

• Idiopathic myocarditis

Clinical Information

• An often fatal inflammatory disorder that affects the myocardium. Morphologically, it is characterized by the presence of an inflammatory infiltrate in the myocardial tissue that includes multinucleated giant cells. It is often associated with the presence of an autoimmune disorder. Patients present with arrhythmias and/or heart failure. Heart transplantation is the only treatment option available.

Details

• I40.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

• The 2023 edition of ICD-10-CM I40.1 became effective on October 1, 2022.

• This is the American ICD-10-CM version of I40.1 – other international versions of ICD-10 I40.1 may differ.