Validation of International Classification of Diseases (ICD) code‐based case definitions of immune checkpoint inhibitor associated inflammatory arthritis from administrative health data
Background Immune checkpoint inhibitors (ICIs) for cancer can lead to immune‐related adverse events, including ICI‐associated inflammatory arthritis (ICI‐IA). There are no validated International Classification of Diseases (ICD) code–based case definitions for ICI‐IA. Methods We…