The provider must submit quotes or a request for pre-authorization of services. The provider must submit a detailed summary of the ancillary goods or services provided, along with the invoice. For verification of contracted DME discounts, the provider must submit a copy of the manufacturer’s suggested retail price (MSRP) with the invoice. Warranties and repairs must be included in the quotes if applicable. If a participant has a third-party insurance or comparable benefit, the contracted DME provider must also submit a copy of the explanation of benefits or denial before payment can be authorized. If the provider provides services outside of the proposed or confirmed dates, payment is not guaranteed. The provider is responsible for billing, collecting, or writing-off costs owed by the liable party. The CRS program is the payer of last resort.