The concept of spondyloarthritis (SpA) encompasses a series of entities that share clinical and imaging characteristics and a common genetic basis. These diseases can affect 0.20 to 1.6% of the general population, limiting functioning and affecting the quality of life of patients. Considering the patient perspective in the management of the disease and ensuring patients are sufficiently prepared to participate in decisionmaking is critical to treatment success as well as for optimal health outcomes. The overall picture of impairments, limitations, and restrictions in activities or social participation of patients with SpA is not adequately assessed in SpA-specific instruments. Therefore, it is quite relevant to measure the broader range of impairments that can affect SpA patients and integrate these into one measure of overall functioning in daily life. The Assessment of SpondyloArthritis international Society-Health Index (ASAS HI) is a recently introduced health instrument for evaluating SpA based on the International Classification of Functioning, Disability and Health, also known as ICF, that could cover a good part of the health metric needs in SpA. This review addresses its origins, its measurement properties, its use in routine clinical practice, as well as its prospects for future use.