Angina decubitus

This code represents a severe form of angina pectoris characterized by chest pain that occurs specifically when the patient is lying down, often at night. It is a manifestation of myocardial ischemia, where the heart muscle is not receiving sufficient blood flow, and is typically associated with advanced coronary artery disease. The recumbent position can increase venous return and cardiac workload, precipitating the ischemic event.

Use this code when documentation clearly indicates angina that is exacerbated or exclusively occurs in a recumbent position. This diagnosis is supported by patient history detailing nocturnal or supine chest pain, often relieved by sitting up or standing. It signifies a more serious and unstable form of angina.

• Differentiate from other forms of angina; the key is the positional component.
• Ensure documentation specifies "decubitus" or "lying down" in relation to the angina.
• Consider co-reporting with codes for underlying coronary artery disease (e.g., 414.0x) if documented.