Guidelines › Acute myocardial infarction: the four-week time frame
Acute myocardial infarction: the four-week time frame
Official text from the FY2027 ICD-10-CM Official Guidelines for Coding and Reporting. The wording is quoted exactly.
Guidelines I.C.9.e.1
“For encounters after the 4-week time frame and the patient is still receiving care related to the myocardial infarction, the appropriate aftercare code should be assigned, rather than a code from category I21.”
“For old or healed myocardial infarctions not requiring further care, code I25.2, Old myocardial infarction, may be assigned.”
Where this applies
The Guidelines are the authority for assigning codes, and following them is required under HIPAA. This page quotes them for convenience and is not a substitute for the official document. See the Terms and Disclaimer.