(a) In determining an individual's initial and ongoing eligibility for any service, an entity may not exclude an individual based on the following factors:(1) the individual's past or present mental illness;(2) medications prescribed to the individual in the past or present;(3) the presumption of the individual's inability to benefit from treatment; or(4) the individual's level of success in prior treatment episodes.(b) Providers must ensure that a client's refusal of a particular service does not preclude the client from accessing other needed mental health or substance abuse services.(c) Providers must establish and implement procedures to ensure the continuity between screening, assessment, treatment and referral services provided to clients.