Other forms of heart disease (I30-I5A)

ICD-10 codes I30 through I5A cover a variety of heart conditions outside the commonly classified types, focusing on inflammatory diseases, valve disorders, conduction problems, arrhythmias, cardiomyopathies, and heart failure. These codes help specify unique heart diseases like pericarditis, endocarditis, and different types of cardiomyopathy for precise diagnosis and treatment planning.

This range includes acute and chronic pericarditis (including idiopathic and infective forms), detailed nonrheumatic valve disorders affecting mitral, aortic, tricuspid, and pulmonary valves, and conduction abnormalities such as atrioventricular blocks and bundle-branch blocks. For example, code I30.0 corresponds to “acute nonspecific idiopathic pericarditis,” also known as idiopathic recurrent pericarditis, while I34.1 is used for nonrheumatic mitral valve prolapse. It also covers various forms of myocarditis and cardiomyopathies, like dilated (I42.0) and hypertrophic cardiomyopathy (I42.1), essential for distinguishing different myocardial disorders. Codes for heart rhythm disturbances such as atrial fibrillation (I48) and ventricular tachycardia (I47.2) are included, aiding in recognizing cardiac dysrhythmias. Additionally, heart failure forms; including systolic, diastolic, and combined types; are classified (e.g., I50.21 for acute systolic heart failure). This grouping also specifies complications and ill-defined heart diseases, ensuring thorough coding for complex cardiac conditions beyond ischemic heart disease.