A formulary is a list of covered items selected by MCS Classicare subject to a specific brand or manufacturer believed to be a necessary part of a quality treatment program. MCS Classicare will generally cover the durable medical equipment items listed in the formulary as long as the item is medically necessary, the medical order is provided by an MCS Classicare network physician, and other plan rules are followed. The DME will be supplied by a contracted DME provider.