How is sequela defined in ICD-10-CM?

In ICD-10-CM, "sequela" refers to a condition that is the result of a previous disease or injury. It is classified using specific codes that describe the late effects of an illness or injury, indicating that while the initial condition may have resolved, the sequelae or residual effects continue to affect the patient's health. Sequela codes typically follow the primary diagnosis code and are used to capture the ongoing impact of the original condition.