I05-I09: Chronic rheumatic heart diseases

I05: Rheumatic mitral valve diseases

Rheumatic mitral valve diseases fall into a category of heart disorders that are caused by rheumatic fever, an inflammatory condition often resulting from untreated strep throat or scarlet fever. When rheumatic fever affects the heart, it usually targets the mitral valve, causing it to become inflamed (mitral valvulitis) or leading to scar tissue that narrows or leaks the valve (mitral stenosis or mitral regurgitation). Symptoms can be hard to spot and depend on the specific valve issue; they may include breathlessness, fatigue, the sensation of rapid, fluttering heartbeats, and swelling in the legs and feet. These diseases can progress over time, potentially placing an increased burden on the heart and lungs. Early detection can help manage the condition and reduce potential complications.