Codes for special purposes is a chapter in ICD-11 that includes codes used for specific, limited, or supplementary applications that do not fit within standard disease or condition classifications. These codes are designed to support particular public health, research, or administrative needs rather than to represent clinical diagnoses.
This chapter encompasses codes used for purposes such as tracking emerging diseases, identifying provisional or temporary classifications, and supporting specialized reporting requirements. Accurate use of these codes facilitates flexibility within the classification system, supports global health monitoring, and enables timely responses to new or evolving health-related situations.