42 CFR § 491.6 - Physical plant and environment.
(a) Construction. The clinic or center is constructed, arranged, and maintained to insure access to and safety of patients, and provides adequate space for the provision of direct services.
(b) Maintenance. The clinic or center has a preventive maintenance program to ensure that:
(2) Drugs and biologicals are appropriately stored; and
(3) The premises are clean and orderly.