High output heart failure

This code describes a form of heart failure where the heart's cardiac output is abnormally elevated, yet insufficient to meet the body's metabolic demands. This occurs despite a normal or even increased ejection fraction, often due to underlying conditions that increase metabolic demand or reduce systemic vascular resistance.

Use this code when documentation explicitly states "high output heart failure." This condition is typically seen in patients with severe anemia, hyperthyroidism, arteriovenous fistulas, or sepsis. Documentation should clearly indicate the presence of heart failure symptoms alongside evidence of increased cardiac output.

• Ensure documentation differentiates high output heart failure from other types of heart failure, especially those with reduced or preserved ejection fraction.
• Always code the underlying cause of the high output state (e.g., severe anemia, hyperthyroidism) in addition to this code.
• Avoid using this code if the heart failure is due to a primary cardiac dysfunction with normal or low output.