A system and method is disclosed for performing diagnostics on patient devices. The patient devices may include respiratory therapy devices that operate in accordance with instruction sets, such as software or firmware. A server may maintain a database of diagnostic data indicating faults in one or more of a plurality of patient devices. The server may transmit this diagnostic data to one or more computing devices, including identification of faults that have occurred. The server may also transmit service data to the plurality of patient devices in order to address the identified faults.