B21022

B21022 is the ICF code for Contrast sensitivity, classified under Body Functions. It describes seeing functions of separating figure from ground, involving the minimum amount of luminance required.

B21022 belongs to the Body Functions component of the ICF. Physiological functions of body systems, including psychological functions.

The ICF (International Classification of Functioning, Disability and Health) is a WHO classification that describes how health conditions affect a person's functioning — body functions, body structures, activities and participation, and environmental factors. It complements ICD-10/ICD-11 diagnosis codes with functioning assessment data used in rehabilitation, disability evaluation, and care planning.