Q&A: Secondary ICD-10-CM diagnosis code assignment for MIs

Article Overview

This article is a coding Q&A for hospital coding and CDI professionals that reviews how secondary diagnosis eligibility is assessed in the context of myocardial infarction-related cases. It discusses general guidance from the Uniform Hospital Discharge Data Set and ICD-10-CM category relationships, including when different MI-related code categories may be relevant based on timing and ongoing care. The piece is designed to help readers understand the scope of the issue and the types of documentation and classification concepts involved without replacing the full article.