ICD-10 Code I25.2 – Old myocardial infarction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I25.2 – Old myocardial infarction
What it is
I25.2 identifies a previous myocardial infarction that is no longer acute. Use it when the record shows a past heart attack, even if the patient is currently stable.
Clinical signs
Clinical features vary; refer to documentation. Common evidence includes a history of infarction, prior ECG changes, imaging consistent with scar, or charted “old MI” without current acute ischemic findings.
When to use this code
Use this code when the provider documents a prior MI and the encounter is not for an active heart attack. It may also fit when old infarction is noted incidentally during evaluation for another problem. Confirm that the record supports a past event rather than current ischemia.
Do not use for
Do not use it for an acute myocardial infarction or for chest pain without confirmed prior infarction. Check documentation if the note only suggests possible ischemia or unspecified coronary disease.
Coding tip
Code I25.2 only when the provider clearly documents a previous MI; if the history is uncertain, query or check documentation.