ICD-10 Code I23.8 – Other current complications following acute myocardial infarction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I23.8 – Other current complications following acute myocardial infarction
What it is
This code identifies a complication that occurs after an acute myocardial infarction but does not fit a more specific I23 category. Use it for documented post-infarction problems that are current and clinically relevant.
Clinical signs
Clinical features vary; refer to documentation. Findings may reflect a recognized complication after MI, such as ongoing cardiac dysfunction or another post-infarction issue noted by the clinician.
When to use this code
Use I23.8 when the record clearly states a current complication following an acute MI and no more specific code applies. It is appropriate when the provider documents a post-infarction complication but does not name a better-defined I23 diagnosis. Check documentation for timing and clinical linkage to the recent infarction.
Do not use for
Do not use this code for the acute myocardial infarction itself or for historical MI without a current complication. Also avoid it when the complication is named more specifically elsewhere in the ICD-10-CM manual.
Coding tip
Confirm the complication is explicitly linked to a recent MI before assigning I23.8.