(1) Reimbursement for equipment shall be the lesser of the following:

(a) the provider's usual and customary charges which are reasonable; or

(b) the medicaid established fee for that service.

(2) Payment to a nonrelated individual for "back-up" services shall be negotiated between the department and the provider on a case-by-case basis. Members of a recipient's family shall not be reimbursed for providing this service. Reimbursement shall only be allowed in those cases where a family member is not available to provide "back-up" services.