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424 Other diseases of endocardium

424.0 Mitral valve disorders

          Mitral (valve):
           incompetence NOS of specified cause, except rheumatic
           insufficiency NOS of specified cause, except rheumatic
           regurgitation NOS of specified cause, except rheumatic
          Excludes: mitral (valve):
           disease (394.9)
           failure (394.9)
           stenosis (394.0)
           the listed conditions:
           when specified as rheumatic (394.1)
           when of unspecified cause but with mention of:
           diseases of aortic valve (396)
           mitral stenosis or obstruction (394.2)

424.1 Aortic valve disorders

          Aortic (valve): }
           incompetence } NOS
           insufficiency } of specified cause,
           regurgitation } except rheumatic
           stenosis }
          Excludes: hypertrophic subaortic stenosis (425.1)
           when specified as rheumatic (395.-)
           when of unspecified cause but with mention of diseases of
           mitral valve (396)

424.2 Tricuspid valve disorders, specified as nonrheumatic

          Tricuspid valve: }
           incompetence } of specified cause,
           insufficiency } except rheumatic
           regurgitation }
           stenosis }
          Excludes: when of unspecified cause (397.0)

424.3 Pulmonary valve disorders

          Pulmonic regurgitation: Pulmonic regurgitation:
           NOS syphilitic
          Excludes: when specified as rheumatic (397.1)

424.9 Endocarditis, valve unspecified

          Endocarditis (chronic )
          Valvular: }
           incompetence } of un- { specified cause,
           insufficiency } specified { except rheumatic
           regurgitation } valve { unspecified cause
           stenosis }
          Valvulitis (chronic) }
          Excludes: when specified as rheumatic (397.9)
           endocardial fibroelastosis (425.3)
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