N.Y. Comp. Codes R. & Regs. tit. 14, § 816.9
(b) All medically monitored services must provide at least all of the following services:
(c) A patient may be retained in the medically monitored withdrawal and stabilization service if he or she is awaiting a scheduled admission into appropriate treatment upon discharge. Such retention must be documented and may not exceed 21 days from date of admission.
(2) Each medically monitored withdrawal and stabilization service shall employ a sufficient number of staff to adequately serve all patients and to meet the requirements of this Part.
(d) Staffing.