Chronic combined systolic and diastolic hrt fail

This code signifies a persistent state of heart failure where the heart exhibits both impaired pumping function (systolic dysfunction) and impaired filling ability (diastolic dysfunction). It represents a chronic, rather than acute, presentation of this combined cardiac insufficiency, often leading to symptoms of congestion.

Apply this code when documentation clearly indicates long-standing heart failure with evidence of both reduced ejection fraction (systolic) and elevated filling pressures or impaired relaxation (diastolic). The physician's diagnosis should explicitly state "chronic combined systolic and diastolic heart failure" or similar terminology. Supporting documentation includes echocardiogram reports detailing both systolic and diastolic abnormalities, and clinical notes describing chronic symptoms of congestion.

• Ensure the documentation specifies "chronic" heart failure; do not use for acute exacerbations.
• Verify that both systolic and diastolic components are explicitly documented; avoid using this code if only one type is mentioned.
• Do not confuse with codes for acute combined heart failure (I50.41) or unspecified combined heart failure (I50.43).