show accompanying symptoms of the underlying disease(s) or risk factors such as tachycardia, tachypnoea, oedema, ascites, pain, hypertension, cardiac arrhythmias, individualized treatment must be ensured in accordance with the generally accepted state of scientific knowledge. According to the G-BA, the adequate treatment of the existing underlying diseases (in addition to heart failure, e.g . myocarditis, cardiomyopathies) or the accompanying symptoms should be comprehensibly documented in the dossier based on the patient characteristics (e.g. oedema, cardiac arrhythmias, etc.). The aetiology of heart failure (congenital heart defects, inadequate success of surgical correction, dilated or restrictive cardiomyopathy, myocardial involvement in genetic muscle diseases and metabolic defects) must