For purposes of 105 CMR 140.500 through 140.560, each clinic licensed to provide mental health services shall operate a mental health program that provides, internally or by contract, in accordance with the requirements of 105 CMR 140.520, the following services, as appropriate to the patient’s chief complaint or problem:

1. (1) intake services including, but not limited to, a substance use disorder screening;
2. (2) evaluation and diagnostic services;
3. (3) treatment planning services;

4. (4) treatment services that include:

   1. (a) case consultation, psychotherapy and counseling; and
   2. (b) pharmacotherapy;
5. (5) emergency services; and
6. (6) referral services including for, but not limited to, any co-occurring substance use disorder. Emergency services may be provided by arrangement. If emergency services are provided

by arrangement, there must be a written agreement between the clinic and the provider to meet the requirements set forth in 105 CMR 140.520(E)(1) and (2).