Unspecified diastolic (congestive) heart failure

This code signifies a form of heart failure where the heart's ventricles are unable to relax and fill properly during diastole, leading to elevated filling pressures and symptoms of congestion. The "unspecified" nature indicates that the specific type of diastolic dysfunction (e.g., preserved ejection fraction) is not documented.

Apply this code when the physician documents "diastolic heart failure" or "congestive heart failure with diastolic dysfunction" without further specification of the ejection fraction or other specific characteristics. This code is appropriate when the documentation clearly indicates diastolic dysfunction as the primary issue, but lacks the detail to assign a more specific code.

• Avoid using this code if the documentation specifies heart failure with preserved ejection fraction (HFpEF), as more specific codes exist.
• Do not use this code if the documentation indicates systolic heart failure, or combined systolic and diastolic heart failure.
• Query the provider for clarification if "diastolic heart failure" is documented without mention of ejection fraction to determine if a more specific code can be assigned.