Acute coronary thrombosis not resulting in myocardial infrc

This diagnosis code signifies the sudden formation of a blood clot within a coronary artery, which obstructs blood flow but does not lead to the death of heart muscle tissue (myocardial infarction). It represents an acute ischemic event affecting the heart without progressing to a full-blown heart attack.

Use this code when documentation clearly indicates an acute coronary thrombosis that has been diagnosed but specifically states that a myocardial infarction did not occur. This is often seen in cases where the thrombus is successfully lysed or removed before significant myocardial damage. Supporting documentation would include physician notes detailing the acute thrombosis and explicitly ruling out MI, possibly with negative cardiac enzyme markers.

• Ensure the documentation explicitly states "not resulting in myocardial infarction" or similar language to differentiate from actual MIs.
• Do not code this with any code from the I25.1- series (atherosclerotic heart disease) due to the Excludes1 note.
• Consider sequencing this code as the primary diagnosis if it is the reason for the encounter, followed by any associated conditions.