The OCK population has been significantly expanded to include additional ICD-10 codes. Specifically, there are now more asthma, bipolar and schizophrenia ICD-10 codes, and major depressive was added as a Severe Mental Illness qualifying diagnosis. This population expansion will go in effect on 4/1/2021. As this population expansion falls on the start of the second year of the program, the first year of the program now has different parameters than the second and subsequent years of the program. Some items will no longer be applicable to the current program but will nevertheless remain on the website for historical purposes.