ICD-10-CM > A00-B99 > A50-A64 > A52 > A52.0 > A52.03 A52.03 Syphilitic endocarditis Billable/Specific Copy Code Copy Description Applicable To Syphilitic aortic valve incompetence or stenosisSyphilitic mitral valve stenosisSyphilitic pulmonary valve regurgitation