Cardiac tamponade

This code represents a life-threatening condition where fluid accumulates in the pericardial sac, compressing the heart and impairing its ability to pump blood effectively. This compression leads to decreased cardiac output and can result in cardiogenic shock if not promptly treated.

Assign this code when documentation clearly indicates a diagnosis of cardiac tamponade, often characterized by symptoms such as dyspnea, chest pain, muffled heart sounds, and pulsus paradoxus. Supporting diagnostic evidence typically includes echocardiography showing pericardial effusion with signs of cardiac compression.

• Differentiate from pericardial effusion without tamponade, which would be coded separately.
• Always look for the underlying cause of the tamponade, such as malignancy, trauma, or infection, and code it as a primary diagnosis if applicable.
• Ensure documentation specifies "tamponade" and not just "pericardial effusion" to support this code.