(a) No corporation organized under this chapter shall compensate any provider of outpatient service by using the restricted annual rate method of payment.
(b) The restricted annual rate method of payment is defined as any method of payment that sets, as all or part of its payment scheme, a total payment limit for mental health and/or substance abuse treatment services for each person seeking treatment based on a per-person, per-unit-of-time criterion that disregards the extent of treatment and/or degree of services rendered.
(c) This prohibition shall not be construed to prohibit or limit capitation or other risk-sharing agreements between providers and insurers permissible by law.