Methods, systems, and computer readable media for transmitting Diameter peer status information are disclosed. According to one method, the method occurs at a first Diameter node. The method includes determining Diameter peer status information for Diameter peer nodes, wherein the Diameter peer status information includes connection statuses for each of the Diameter peer nodes. The method also includes generating, using group related information indicating a masking order for the connection statuses, a mask indicating the connection statuses, wherein each of the connection statuses is indicated by a value stored in a different position in the mask and sending the mask to a second Diameter node.