N.Y. Comp. Codes R. & Regs. tit. 14, § 816.10 – Standards pertaining to Medicaid reimbursement.

(a) Medicaid reimbursement will be provided in accordance with the provisions of Part 841 of this Title.
(b) The following services are not eligible for Medicaid reimbursement on a fee for service basis:
1. (1) visits to the premises of a withdrawal and stabilization service for the sole purpose of attending meetings of a self-help group;
2. (2) any visits which include only companionship, recreation, and/or social activity;
3. (3) treatment provided in a medically monitored withdrawal and stabilization service.