cardiovascular system disease pathway cardiomyopathy pathway Cardiomyopathy - a general diagnostic term designating primary noninflammatory disease of the heart muscle, often of obscure or unknown etiology and not the result of ischemic, hypertensive, congenital, valvular, or pericardial disease. It is usually subdivided into dilated, hypertrophic, and restrictive cardiomyopathy (1). Cardiomyopathy is the deterioration of the cardiac muscle of the heart wall. PW:0000022 pathway