Subacute bacterial endocarditis Tags: Disease.Subacute bacterial endocarditis (also called endocarditis lenta) is a type of endocarditis (more specifically infective endocarditis).It can be confused with essential mixed cryoglobulinemia.It can be considered a form of Type III hypersensitivity. ICD10 I33.0 ICD9 421.0 MeSH ID D004698 Learn more... Loading...