2025 ICD-10-CM Diagnosis Code I21.9
Acute myocardial infarction, unspecified Applicable To The following code(s) above I21.9 contain annotation back-references that may be applicable to I21.9: Clinical Information ICD-10-CM I21.9 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0): Convert I21.9 to ICD-9-CMCode History Diagnosis Index entries containing back-references to I21.9: