Non-ischemic myocardial injury (non-traumatic)

This code identifies myocardial damage indicated by elevated cardiac biomarkers (e.g., troponin) in the absence of acute myocardial ischemia. It signifies injury to the heart muscle not caused by a lack of blood flow due to coronary artery disease. This can result from various systemic conditions or direct cardiac insults.

Use this code when documentation specifies myocardial injury without evidence of ischemic etiology, such as in cases of sepsis, pulmonary embolism, myocarditis, or renal failure. The physician's clinical judgment and diagnostic workup ruling out ischemia are crucial for appropriate assignment.

• Ensure documentation explicitly states "non-ischemic" myocardial injury or provides sufficient clinical context to rule out ischemic causes.
• Do not code with acute myocardial infarction (I21.-) or traumatic cardiac injury (S26.-) due to Excludes1 notes.
• Consider sequencing this code as a secondary diagnosis when the underlying cause of the myocardial injury is the primary reason for the encounter.